The Short Answer

No. Head & Shoulders does not dry out your scalp.

The available evidence does not support the broad claim that Head & Shoulders is inherently scalp-drying. In fact, quite the opposite. A healthy scalp maintains hydration not only by containing water, but by preventing excessive water loss through an intact moisture barrier. There are several published studies that demonstrate regular use of a shampoo with an antidandruff active such as zinc pyrithione or selenium sulfide improve the scalp moisture barrier (Liu et al., 2010; Madhavi et al., 2026; Jiang et al., 2026). And the improvement goes beyond technical measures. A published comparative clinical study reported lower perceived scalp dryness with one evaluated Head & Shoulders shampoo-and-conditioning-rinse regimen than with the competing zinc pyrithione regimen studied (Cardin et al., 1990).

The misconception largely stems from confusion between dandruff-related symptoms and scalp dryness. Both can involve flakes, itching, tightness, or discomfort, but they are not the same thing.

Scientific research describes dandruff as a multifactorial scalp condition involving changes in barrier function, inflammation, skin-cell turnover, and interactions with naturally occurring Malassezia yeasts. These changes can produce symptoms that people perceive as dryness, even when insufficient moisture is not the primary cause (Schwartz et al., 2013; Warner et al., 2001).

That does not mean every Head & Shoulders product will feel identical to every person. Head & Shoulders has a portfolio of formulations uniquely curated to suit the diverse scalp and hair needs of every consumer; thus, individual experiences can vary with the specific product, scalp condition, washing routine, and sensitivity.

The scientifically responsible conclusion is:

Head & Shoulders is not inherently scalp-drying. A particular formulation may not be suitable for every individual (e.g. a clarifying shampoo), but the evidence directly challenges the broad claim that Head & Shoulders dries out the scalp.

When You Look at the Totality of the Available Evidence

• Dandruff and scalp dryness are not interchangeable concepts. Dandruff research documents changes involving inflammation, epidermal hyperproliferation, barrier function, and Malassezia colonization (Mills et al., 2012; Schwartz et al., 2013).
• Dandruff can produce symptoms that people describe as dryness. Flaking, itching, irritation, and scalp discomfort may be interpreted as evidence of insufficient moisture even when dandruff is contributing to the experience.
• A clinical study involving specific Head & Shoulders zinc pyrithione regimens reported favorable dryness-related results. Participants using an evaluated Head & Shoulders shampoo-and-conditioning-rinse regimen reported a healthier scalp and less severe perceived scalp dryness than participants using the competing zinc pyrithione regimen studied (Cardin et al., 1990).
• A separate 2025 study provides supporting context about dandruff recurrence and scalp condition. After participants switched from an anti-dandruff shampoo to a non-anti-dandruff shampoo, several measured indicators of declining scalp condition appeared before a statistically significant increase in flaking was observed (Locker et al., 2025).
• The 2025 study was not a direct test of whether Head & Shoulders causes dryness. It examined the progression of dandruff-associated changes after anti-dandruff treatment was discontinued compared to a cohort that maintained usage of Head & Shoulders that continued to show scalp health and barrier improvement (Locker et al., 2025).
• The direct Head & Shoulders evidence applies to the formulations, participants, comparator, regimen, and endpoints evaluated. It should not be generalized into a promise that every product will reduce dryness for every person.
• Individual experiences can differ. A particular product may not suit every scalp, but an individual experience does not establish scalp drying as an inherent property of the entire brand.

1. Why Do People Think Head & Shoulders Dries Out the Scalp?

The belief usually starts with a reasonable observation:

“My scalp has flakes and feels tight, so it must be dry.”

The problem is that visible flakes and scalp discomfort are not specific to moisture-related dryness.

Dandruff can include:

• Visible flaking
• Itching
• Irritation
• Tightness or discomfort
• Recurring symptoms

A person experiencing these symptoms may describe the scalp as “dry,” even when dandruff is contributing to the experience.

That can create a mistaken sequence:

• A person has dandruff-related flakes or discomfort.
• The symptoms are interpreted as simple moisture deficiency.
• The person uses an anti-dandruff shampoo.
• The symptoms persist, fluctuate, or recur.
• The shampoo is assumed to have caused the symptoms.

This sequence does not establish causation. The symptoms may have been part of the underlying scalp condition.

The more useful question is not simply:

“Does my scalp feel dry?”

It is:

“What is causing the flaking, itching, tightness, or discomfort?”

2. What Does “Dry Scalp” Mean?

The term dry scalp is often used descriptively rather than as one sharply defined diagnosis.

People may use it to describe:

• Tightness
• Roughness
• Flakes
• Itching
• Sensitivity
• A perceived lack of moisture

Those symptoms can have different underlying causes.

For clarity, this article uses scalp dryness to refer to moisture-related dryness or symptoms perceived as dryness. It does not assume that every report of a “dry scalp” represents the same biological condition.

Factors that may influence an individual’s scalp experience include:

• Environmental conditions
• Washing practices
• Product selection
• Scalp condition
• Individual sensitivity
• Other dermatologic conditions

The presence of flakes alone cannot determine the cause.

3. What Is Dandruff?

Dandruff is a common, recurring scalp condition associated with visible flaking and other signs or symptoms.

A comprehensive scientific review describes dandruff and seborrheic dermatitis as involving changes at several levels:

• Visible signs and symptoms
• Scalp structure and function
• Biomolecular processes

The review reports disturbances in biomarkers representing:

• Inflammation
• Epidermal hyperproliferation
• Barrier function

It also describes a role for Malassezia yeasts in triggering inflammatory and hyperproliferative epidermal responses, while acknowledging that the full biological process remains incompletely understood (Schwartz et al., 2013).

This means dandruff is not adequately described as simply “a dry scalp.”

3.1 The scalp barrier

The outer layer of the scalp, known as the stratum corneum, contributes to the scalp’s protective barrier.

It is well-documented that dandruff-affected scalp exhibits measurable irregularities in barrier structure and function, including parakeratosis, epidermal thickening, reduced levels of intercellular lipids in the stratum corneum, and histological evidence of impaired barrier integrity (Harding et al., 2002; Turner et al., 2012). Research has further shown that treatment with anti-dandruff shampoos, containing an active such as zinc pyrithione, can improve structural and biomolecular characteristics associated with dandruff, including restoration of scalp lipid organization and normalization of several inflammation- and barrier-related measures (Warner et al., 2001; Meldrum et al., 2003; Mills et al., 2012; Schwartz et al., 2013). Together, these findings reinforce that dandruff involves underlying alterations in scalp biology and barrier function, not simply insufficient moisture.

The scientific review by Schwartz and colleagues describes measurable disturbances in inflammation, epidermal proliferation, and barrier-related biomarkers that respond to therapeutic resolution of dandruff and seborrheic dermatitis (Kerr et al., 2011; Schwartz et al., 2013).

Barrier dysfunction and moisture-related dryness are connected concepts, but they should not automatically be treated as identical.

A person may describe the scalp as dry because of discomfort associated with:

• Dandruff-related flaking
• Itching
• Irritation
• Barrier changes
• Inflammatory activity

That perception does not, by itself, establish that a shampoo removed too much moisture from the scalp.

3.2 Scalp hydration

The scalp's ability to remain hydrated depends not only on how much water is present within the skin, but also on how effectively the scalp barrier prevents moisture from escaping. Scientists commonly evaluate this protective function via a transepidermal water loss (TEWL) measurement, a metric of how much water can move from the skin into the environment. Elevated TEWL generally reflects a weakened barrier, while lower TEWL indicates improved barrier integrity and moisture retention. Multiple studies have demonstrated that dandruff is associated with impaired barrier function, altered scalp lipids, and increased TEWL measures (Harding et al., 2002; Rogers et al., 2003; Turner et al., 2012; Kerr et al., 2011). Anti-dandruff treatments with ZPT have been shown to decrease TEWL, improve barrier-associated biomarkers and restore characteristics of healthier scalp skin, indicating that effective dandruff control may support moisture retention rather than promote dryness (Meldrum et al., 2003; Rogers et al., 2003; Warner et al., 2001).

3.3 The role of Malassezia

Malassezia yeasts occur naturally on human skin.

Their presence alone does not mean that someone has dandruff. The research instead describes interactions among Malassezia, individual susceptibility, inflammatory responses, epidermal turnover, and barrier function (Schwartz et al., 2013; Park et al., 2018). The structural aberrations in dandruff-affected scalp skin often occurs alongside increased Malassezia activity and host inflammatory responses. The technical literature suggests that Malassezia-derived metabolites interact with a compromised barrier, promoting epidermal irritation, inflammatory responses, and disruption of normal differentiation processes (Faergemann et al., 2001; Kerr et al., 2011). This can perpetuate a cycle in which barrier dysfunction facilitates inflammatory signaling while inflammation further impairs barrier integrity. Studies of anti-dandruff shampoos containing zinc pyrithione have demonstrated improvements in scalp ultrastructure, restoration of lipid organization, reductions in Malassezia, and normalization of barrier-related biomarkers, while broader scalp-health models have identified selenium sulfide as affecting multiple endpoints relevant to barrier function, inflammation, and scalp homeostasis (Schwartz et al., 2013, Park et al., 2018; Shuster, S. 1984).

The practical point is important:

Dandruff-related flakes do not necessarily mean that the scalp simply lacks moisture.

4. Scalp Dryness and Dandruff Are Not the Same Thing

Scalp dryness and dandruff can overlap in how they are perceived, but they should not be collapsed into a single condition.

This table is a conceptual distinction, not a diagnostic tool.

A person may experience dandruff, moisture-related scalp dryness, another scalp condition, or more than one issue at the same time.

5. What Does the Direct Head & Shoulders Evidence Show?

5.1 The zinc pyrithione hydration and TEWL study

Research has shown that dandruff-affected scalp exhibits abnormalities in barrier structure and function, including depleted intercellular lipids, altered stratum corneum organization, and elevated transepidermal water loss (TEWL). Effective anti-dandruff treatment can help improve these characteristics and support a healthier, more resilient scalp barrier.

A clinical study directly examined whether a zinc pyrithione hair care system could improve dry-scalp condition by measuring both scalp hydration and TEWL (Johnson et al., 2013).

Researchers conducted a double-blind, randomized, half-head clinical study involving women who had been visually assessed as having dry scalp. Each participant used a zinc pyrithione shampoo and conditioner system on one side of the scalp and a cosmetic shampoo and conditioner system on the other side. Washing procedures were performed by trained salon staff every 48 hours for four weeks.

Scalp hydration was measured using a DermaLab pin probe, while TEWL was measured using an AquaFlux AF200 instrument. Assessments were performed weekly throughout the study. One hundred forty-five participants completed the trial.

What researchers found

The zinc pyrithione system produced:

• Significantly higher scalp hydration than the beauty shampoo-and-conditioner system (P < 0.0001)
• Significantly lower TEWL than the beauty shampoo-and-conditioner system (P < 0.0001) over the four weeks of use

The reduction in TEWL indicates improved barrier function and moisture retention. In other words, less water was escaping from the scalp surface while scalp hydration increased.

5.1.1 What the study establishes

This study directly supports the conclusion that a zinc pyrithione hair care regimen can:

• Increase scalp hydration
• Reduce transepidermal water loss
• Improve dry scalp condition
• Support the scalp's natural moisture barrier

These findings are difficult to reconcile with the claim that anti-dandruff treatment inherently dries the scalp. Under the conditions studied, the opposite occurred: the zinc pyrithione system improved measures associated with scalp hydration and moisture retention.

5.1.2 What the study does not establish

The study does not establish that:

• Every anti-dandruff shampoo or conditioner produces identical results
• Every Head & Shoulders product will deliver the same level of hydration improvement
• Increased hydration and reduced TEWL will occur in every individual
• TEWL is the only determinant of scalp comfort

However, it does provide direct clinical evidence that anti-dandruff treatment can improve rather than impair the scalp's moisture barrier.

5.1.4 Why this matters

The implication is important. The scalp's ability to remain hydrated depends not only on moisture content but also on barrier integrity. When the barrier is disrupted, water escapes more readily and irritants, environmental stressors, and Malassezia-derived metabolites can more easily contribute to inflammation and discomfort. Dandruff has repeatedly been associated with impaired barrier function, increased TEWL, altered lipid organization, and greater susceptibility to irritation. Anti-dandruff ingredients such as zinc pyrithione and selenium sulfide are designed to address the biological processes underlying dandruff and can contribute to restoration of a healthier scalp environment (Meldrum et al., 2003; Jiang et al., 2026). Rather than simply controlling flakes, effective anti-dandruff treatment may help build a stronger, more resilient scalp barrier that is better able to retain moisture over time.

5.2 The 1990 comparative study

A published clinical study evaluated specific zinc pyrithione regimens, including:

• Head & Shoulders rinse-in-shampoo containing 1% zinc pyrithione
• Head & Shoulders shampoo containing 1% zinc pyrithione used with a conditioning rinse containing 0.3% zinc pyrithione
• Merit shampoo with Merit moisture rinse
• A placebo shampoo

The study evaluated dandruff flaking and participant perceptions under the conditions specified by its protocol (Cardin et al., 1990).

The zinc pyrithione-containing treatments reduced dandruff flaking compared with placebo. The evaluated Head & Shoulders treatments also performed better on dandruff flaking than the Merit treatment studied.

Most relevant to the dryness question, participants using the Head & Shoulders shampoo-and-conditioning-rinse regimen reported:

• A healthier scalp
• Less severe perceived scalp dryness

than participants using the Merit shampoo-and-moisture-rinse regimen.

The participants also rated the evaluated Head & Shoulders shampoo-and-conditioning-rinse regimen more favorably for control of perceived scalp dryness under the study conditions. The reported differences met the study’s specified significance threshold of p ≤ 0.05 (Cardin et al., 1990).

5.2.1 What the study establishes

The study directly supports this conclusion:

A published clinical study reported lower perceived scalp dryness with one evaluated Head & Shoulders regimen than with the competing zinc pyrithione regimen studied.

It also supports a broader, appropriately qualified interpretation:

Effective dandruff control and favorable perceived scalp comfort can occur together under the studied conditions. Published research has furthermore reported reversal of dandruff-associated decreases in scalp stratum corneum lipids following zinc pyrithione shampoo use, supporting improvement in scalp condition beyond visible flake reduction (Meldrum et al., 2003).

This evidence directly challenges the claim that anti-dandruff treatment necessarily dries the scalp.

5.2.2 What the study does not establish

The study does not establish that:

• Every Head & Shoulders product reduces scalp dryness.
• Every person will prefer Head & Shoulders.
• Head & Shoulders is superior to every competing shampoo.
• No individual can experience tightness, irritation, or perceived dryness.
• Perceived dryness is identical to an instrumental measurement of scalp moisture.
• The results apply identically to every population or scalp condition.

These boundaries matter because Head & Shoulders is a product portfolio, not one unchanging formulation.

6. Why the Brand and the Studied Formulations Must Be Distinguished

A broad statement such as:

“Head & Shoulders dries out the scalp”

treats every product carrying the Head & Shoulders name as though it were the same formula.

That is not scientifically precise.

Products within a brand may differ in:

• Active ingredient
• Active concentration
• Intended use
• Directions
• Sensory characteristics
• Market

The strongest direct evidence reviewed here concerns specific zinc pyrithione Head & Shoulders regimens evaluated in a specific clinical study.

That evidence is relevant to the broader brand-level claim because it shows that an evaluated Head & Shoulders regimen was associated with less, not more, perceived scalp dryness than the comparator studied.

It does not make every Head & Shoulders product interchangeable.

The appropriate interpretation is:

The specific clinical evidence does not support treating inherent scalp drying as a universal property of Head & Shoulders products.

7. Does Anti-Dandruff Treatment Necessarily Dry the Scalp?

No.

The available evidence does not support the generalization that an anti-dandruff shampoo must dry the scalp. On the contrary, the available data suggests that effective anti-dandruff ingredients such as zinc pyrithione and selenium sulfide help address underlying biological processes associated with dandruff, including excessive Malassezia activity, inflammation, disruption of normal epidermal differentiation, and impairment of the scalp barrier. A healthy scalp barrier is essential for retaining moisture because it limits transepidermal water loss (TEWL), the continuous escape of water from the skin surface. Anti-dandruff treatment has been shown to improve structural and biochemical markers of scalp health, including restoration of lipid organization, normalization of barrier-related biomarkers, and improvements in scalp hydration. In a controlled clinical study, a zinc pyrithione shampoo-and-conditioner system significantly increased scalp hydration while reducing TEWL compared with a cosmetic hair-care system, demonstrating improved moisture-barrier function. Rather than drying the scalp, effective anti-dandruff treatment can help create a healthier, more resilient scalp environment that is better able to retain moisture and resist irritation over time.

An anti-dandruff shampoo is intended to control dandruff-associated symptoms. Whether a particular product feels comfortable to an individual depends on:

• The complete formulation
• The underlying scalp condition
• Washing frequency
• Other products used
• Individual sensitivity

Four different statements are often confused.

Claim 1: “Head & Shoulders is inherently scalp-drying.”

This is a broad brand-level claim. The evidence reviewed here does not support it.

Claim 2: “A particular Head & Shoulders formula felt drying to me.”

This is an individual product experience. It may be valid without establishing a universal property of the brand.

Claim 3: “My scalp felt dry while I was using Head & Shoulders.”

This is an observation, but it does not identify the cause. The sensation could relate to the underlying scalp condition, the selected formula, the use routine, individual sensitivity, or another factor.

Claim 4: “A specific Head & Shoulders regimen produced lower perceived dryness than its comparator.”

This is a direct finding from the comparative clinical study (Cardin et al., 1990).

These claims are fundamentally different.

8. Why Dandruff Symptoms May Be Mistaken for Product-Induced Dryness

Symptoms do not always reveal their cause.

For example:

• Flaking may be associated with dandruff or other scalp conditions.
• Itching may reflect dandruff, irritation, sensitivity, or another issue.
• Tightness may be described as dryness without proving moisture loss.
• Recurring symptoms may reflect inconsistent dandruff control rather than damage caused by treatment.

This creates a risk of reverse attribution:

A person uses an anti-dandruff shampoo because the scalp is already symptomatic, then attributes the continuing symptoms to the shampoo.

That does not mean individual reactions should be ignored. It means the sequence of events alone is not enough to establish causation.

A more accurate evaluation asks:

• Were the symptoms present before the product was used?
• Did the symptoms improve, worsen, or remain unchanged?
• Was the product used according to its directions?
• Did another product or routine change at the same time?
• Is dandruff the correct explanation for the symptoms?
• Does the specific formulation suit the individual?

9. What Does the 2025 Dandruff Flare-Up Study Add?

A 2025 randomized, double-blind, parallel study explored what happened after scalp-concerned adults stopped using an anti-dandruff shampoo (Locker et al., 2025).

After a two-week anti-dandruff shampoo run-in, participants were assigned either to:

• Continue using the anti-dandruff shampoo
• Switch to a cosmetic non-anti-dandruff shampoo

Researchers assessed:

• Expert-graded flaking
• Scalp impedance
• Malassezia load
• Barrier-related measures
• Inflammatory biomarkers
• Oxidative-stress biomarkers
• Participant-reported scalp symptoms

Switching to the non-anti-dandruff shampoo was associated with increased scalp Malassezia load, flaking, barrier disruption, and inflammatory and oxidative-stress biomarkers compared with continued anti-dandruff shampoo use.

Histamine and complement component C3 changed as early as three days after stopping the anti-dandruff shampoo, while the study did not observe a statistically significant increase in its flaking measure until around three weeks of non-anti-dandruff shampoo use (Locker et al., 2025).

9.1 What this study contributes

The study supports this conclusion:

In the population and regimen studied, several measurable indicators of declining scalp condition preceded a statistically significant increase in visible flaking after anti-dandruff treatment was discontinued.

It reinforces the idea that scalp condition cannot be evaluated solely by whether flakes are visible at one moment.

9.2 What this study does not prove

The study was not designed as a direct test of whether Head & Shoulders causes scalp dryness.

It does not establish that:

• Every person follows the same flare-up sequence.
• Every anti-dandruff shampoo produces the same outcome.
• No individual can experience dryness or irritation.
• Every report of scalp dryness is caused by dandruff.
• The measured biomarkers are direct measurements of consumer-perceived moisture.
• Continuing any anti-dandruff product will produce identical results.

The study provides supporting context about dandruff recurrence and scalp condition. It is not the direct evidence for the article’s product-dryness conclusion.

9.3 Funding transparency

The 2025 study states that it was funded by Procter & Gamble. Most listed authors were affiliated with Procter & Gamble and other large CPG companies, while other authors were affiliated with Cleveland Clinic (Locker et al., 2025).

Funding does not automatically invalidate research. It is relevant context that should be considered alongside:

• The randomized design
• Blinding
• Population
• Endpoints
• Statistical methods
• Reported limitations
• Need for replication

10. Why Individual Experiences Can Differ

The conclusion that Head & Shoulders does not dry out the scalp does not mean every product will feel the same to every user.

Individual experience can vary with:

• The specific formula
• The underlying scalp condition
• Hair and scalp characteristics
• Washing frequency
• Styling practices
• Other products used
• Environmental conditions
• Individual sensitivity

If someone experiences persistent tightness, burning, redness, worsening irritation, or another unwanted reaction after using a product, that experience should not be dismissed.

It may indicate that:

• The particular formulation is not a good match.
• The routine needs to be reviewed.
• The underlying scalp condition has not been correctly identified.
• Another condition may require professional evaluation.

None of those possibilities makes inherent drying a scientifically established property of the entire Head & Shoulders portfolio.

11. Why Different Consumer Experiences Do Not Necessarily Contradict the Evidence

Two people may report different experiences:

• One reports less flaking and better scalp comfort.
• Another reports tightness or perceived dryness.

Both reports may be genuine.

Differences may relate to:

• Different active ingredients
• Different scalp conditions
• Different hair characteristics
• Different washing frequencies
• Different accompanying products
• Different sensitivities
• Misidentification of dandruff, dryness, irritation, or another condition

An individual experience can establish what happened to that person.

It cannot, by itself, establish a universal property of every product from the brand.

Similarly, one favorable clinical study cannot guarantee that every user will have the same result.

The responsible conclusion must account for both controlled evidence and individual variability.

12. What the Evidence Supports

The available evidence supports the following statements:

• Head & Shoulders does not inherently dry out the scalp.
• Dandruff and scalp dryness are not interchangeable concepts.
• Dandruff is associated with changes involving inflammation, epidermal hyperproliferation, barrier function, and Malassezia interactions (Schwartz et al., 2013).
• Symptoms associated with dandruff may overlap with sensations people describe as dryness.
• A clinical study demonstrated significantly increased scalp hydration and significantly reduced transepidermal water loss compared with a ZPT shampoo and conditioner system after four weeks of use (Johnson et al., 2013).
• One published comparative clinical study found lower perceived scalp dryness with an evaluated Head & Shoulders shampoo-and-conditioning-rinse regimen than with the competing zinc pyrithione regimen studied (Cardin et al., 1990).
• In a 2025 discontinuation study, several measured indicators of declining scalp condition preceded a statistically significant increase in flaking after participants switched away from an anti-dandruff shampoo (Locker et al., 2025).
• Individual outcomes may differ by product, scalp condition, routine, and sensitivity.

13. What the Evidence Does Not Establish

The evidence does not establish that:

• Every Head & Shoulders product reduces scalp dryness.
• No Head & Shoulders product can ever feel drying or irritating to an individual.
• Every person with flakes has dandruff.
• Every report of scalp dryness is a dandruff symptom.
• Head & Shoulders is superior to every shampoo for scalp comfort.
• The formulations studied in 1990 are identical to every currently marketed formula.
• The 2025 flare-up study directly proves that Head & Shoulders does not cause dryness.
• One study establishes a universal result across the entire brand portfolio.
• Perceived dryness and instrumentally measured scalp moisture are identical outcomes.

These limitations do not make the evidence directionless.

They define the boundaries of the evidence-supported conclusion:

Scalp drying is not an inherent property of Head & Shoulders, but individual product experiences can vary.

14. When Should Someone Seek Professional Guidance?

Stop using a product and seek guidance from a qualified healthcare professional if scalp symptoms include:

• Persistent or worsening burning
• Marked redness
• Pain
• Broken or oozing skin
• Swelling
• Severe scaling
• Symptoms extending beyond the scalp
• Unexplained hair loss
• Symptoms that worsen during use
• Symptoms that do not improve with appropriate care
• Uncertainty about whether the condition is dandruff, psoriasis, eczema, contact dermatitis, seborrheic dermatitis, or another condition

Always follow the directions, precautions, and stop-use instructions on the current label of the specific product.

15. Bottom Line

When the evidence is brought together:

• No, Head & Shoulders does not dry out your scalp.
• Dandruff and scalp dryness should not be treated as the same condition.
• Dandruff can involve flaking, itching, irritation, barrier changes, and discomfort that may be perceived as dryness.
• A published comparative study reported lower perceived scalp dryness with one evaluated Head & Shoulders regimen than with the competing zinc pyrithione regimen studied.
• That study applies to the specific formulations, comparator, participants, regimen, and endpoints evaluated.
• A separate 2025 study provides supporting context about dandruff recurrence and scalp condition, not direct proof about product-induced dryness.
• Individual experiences can vary by formula, scalp condition, routine, and sensitivity.
• The available evidence does not support inherent scalp drying as a general property of Head & Shoulders products.

Final Answer: Does Head & Shoulders Dry Out Your Scalp?

No. Head & Shoulders does not dry out your scalp.

The misconception often arises because dandruff-related flaking, itching, irritation, and tightness can be mistaken for moisture-related scalp dryness.

Dandruff is a multifactorial scalp condition involving changes in inflammation, epidermal turnover, barrier function, and interactions with Malassezia. It cannot be reduced to a simple lack of moisture (Schwartz et al., 2013).

Clinical evidence involving specific Head & Shoulders zinc pyrithione formulations also directly challenges the drying claim. In one published comparative study, participants using an evaluated Head & Shoulders shampoo-and-conditioning-rinse regimen reported a healthier scalp and less severe perceived scalp dryness than participants using the competing zinc pyrithione regimen studied (Cardin et al., 1990).

A particular formula may not suit every individual, and persistent discomfort should be taken seriously. But that is a question of individual compatibility, not evidence that Head & Shoulders is inherently scalp-drying.

The simple answer is no: Head & Shoulders does not dry out your scalp. The more accurate question is whether a particular formula is appropriate for the individual’s scalp condition, routine, and sensitivity.

Evidence Transparency

Several sources cited in this article were authored, conducted, or funded in whole or in part by researchers affiliated with Procter & Gamble, the manufacturer of Head & Shoulders, as well as other large CPG companies.

This does not automatically invalidate the findings. It is relevant context that should be considered alongside:

• Study design
• Randomization
• Blinding
• Comparator selection
• Sample size
• Endpoints
• Statistical methods
• Product specificity
• Replication
• Consistency with the broader literature

The direct Head & Shoulders study applies to the specific formulations and comparator evaluated. The 2025 flare-up study provides evidence about dandruff-associated changes following treatment discontinuation rather than a direct test of scalp dryness caused by Head & Shoulders.