Clinical testing isn’t
optional—
it’s our standard.
We literally count hairs.
We leverage a combination of industry-leading hair measurement tools—from hair counts to pull tests—to assess growth, quality, shedding, and texture. Because our results aren't just visible—they're measurable.
We publish our results.
Our research is published in scientific journals, and therefore undergoes thorough evaluation by scientific experts to ensure the clinical rigor, quality, and reliability of the results.
We are never done researching.
We’ve conducted 20 clinical studies (and counting). And we continue our research so that we evolve with the science and keep delivering meaningful results.
Dive deeper into our award-winning Hair Growth Nutraceuticals.
Most supplements aren’t clinically tested, but we’re raising the bar for ourselves (and you). That’s why we measure results in real people, including in randomized placebo-controlled trials.
Nutrafol Women is clinically tested to improve hair growth and hair quality.
100%
of women saw their baby hairs grow out after 6 months.
100%
of women felt an improvement in their hair strength after 3 months, and saw more scalp coverage after 6 months.
Nutrafol. Data on file. 2022.
We had experts count the hairs.
*statistically significant and progressive improvement across visits compared to baseline
In a 6-month study of Nutrafol Women Hair Growth Nutraceutical. Sivamani RK et al. J Drugs Dermatol. 2024.
We had experts assess the results.
* statistically significant proportion of subjects compared to no change or worsened.
In a 6-month study of Nutrafol Women Hair Growth Nutraceutical. Sivamani RK et al. J Drugs Dermatol. 2024.
We also assessed hair shedding.
*statistically significant and progressive improvement across visits compared to baseline
In a 6-month study of Nutrafol Women Hair Growth Nutraceutical. Sivamani RK et al. J Drugs Dermatol. 2024.
Benefits you can see and feel.
Formula benefits
- Less shedding
- Thicker hair growth
- Hair that grows faster, stronger, and longer
- Visibly thicker lashes and brows
- Reduced feelings of stressed, and increased energy
Nutrafol. Data on file. 2022.
About Nutrafol Women.
Our daily hair growth supplement is made for women 18-44 with a plant-based lifestyle who are experiencing signs of hair thinning. Physician-formulated with 100% vegan ingredients to target root causes of thinning such as stress, nutrition, and metabolism.
We documented their progress.
Francine
Taking Nutrafol Women Hair Growth Nutraceutical
In a 6-month clinical study, participants taking Nutrafol Women experienced significant hair growth.
“It not only helped with the thickness and fullness of my hair, but also the strength and durability. People compliment me left and right about how healthy and strong my hair looks.”
Lindsey
Taking Nutrafol Women Hair Growth Nutraceutical
In a 6-month clinical study, participants taking Nutrafol Women experienced significant hair growth.
“I've noticed that when I brush my hair, I don't shed as much as I used to. I also really feel a difference in the volume of my hair and the thickness. Not only has Nutrafol benefited my hair, it's benefited my overall wellness, energy, and how I feel on a daily basis.”
Tanya
Taking Nutrafol Women Hair Growth Nutraceutical
In a 6-month clinical study, participants taking Nutrafol Women experienced significant hair growth.
Aliza
Taking Nutrafol Women Hair Growth Nutraceutical
In a 6-month clinical study, participants taking Nutrafol Women experienced significant hair growth.
Nutrafol Women’s Balance is clinically proven to improve hair growth and hair quality.
100%
of women showed improvement in hair growth after 9 months.
93%
of women saw improvement in dryness and brittleness after 6 months.
Berkowitz S et al. ASDS. 2020.
The first and only hair growth supplement with published clinical studies in menopausal women.
Based on US (placebo-controlled studies in) publications through Pubmed, Cochrane and top Google Scholar and ScienceDirect results as of December 11, 2023.
We had experts count the hairs.
NUTRAFOL WOMEN'S BALANCE
Placebo
*statistically significant difference compared to placebo.
In a 6-month study of Nutrafol Women's Balance Hair Growth Nutraceutical. Ablon G et al. J Drugs Dermatol. 2021.
We had experts assess the results.
Nutrafol Women's Balance
Placebo
*statistically significant difference compared to placebo.
In a 6-month study of Nutrafol Women's Balance Hair Growth Nutraceutical. Ablon G et al. J Drugs Dermatol. 2021.
The results kept getting better.
Terminal hair counts
*statistically significant increase compared to baseline.
In a 12-month study of Nutrafol Women's Balance Hair Growth Nutraceutical. Ablon G et al. J Drugs Dermatol. 2022.
Benefits you can see and feel.
Formula benefits
- Visibly thicker hair volume
- Fuller scalp coverage
- Visibly softer, shinier, and stronger hair growth
Berkowitz S et al. ASDS. 2020.
Women also reported
- Improved feelings of menopause like hot flashes, sleep, and mood1
- Reduced feelings of stress2
About Nutrafol Women’s Balance.
Our physician-formulated hair growth supplement is designed for women 45+ experiencing hair thinning, including menopausal women. We use clinically tested ingredients to target root causes of thinning, such as hormones, aging, and metabolism.
We documented their progress.
“I was experiencing a lot of breakage and I’m not seeing that anymore when I comb my hair.”
Lydia
Taking Nutrafol Women’s Balance Hair Growth Nutraceutical
In a 6-month clinical study, participants taking Nutrafol Women's Balance experienced significant hair growth.
“I have been taking Nutrafol Women Balance for 6 months now and I really like it. I definitely feel like my hair is visibly thicker now and healthier and growing better than it had been.There is also less shedding.”
Erryn
Taking Nutrafol Women Balance Hair Growth Nutraceutical
In a 6-month clinical study, participants taking Nutrafol Women experienced significant hair growth.
“My hair looks so much stronger and longer.”
Karin
Taking Nutrafol Women Balance Hair Growth Nutraceutical
In a 6-month clinical study, participants taking Nutrafol Women experienced significant hair growth.
Heidi
Taking Nutrafol Women Balance Hair Growth Nutraceutical
In a 6-month clinical study, participants taking Nutrafol Women experienced significant hair growth.
Nutrafol Postpartum is clinically tested to improve hair growth and hair quality.
91%
of users saw less hair shedding after 2 months.
98%
of users saw improvements in their hairlines after 4 months.
Nutrafol. Data on file. 2023.
Better Hair Growth & Improved Hairline.
*statistically significant proportion of subjects agreed compared to disagreed.
Nutrafol. Data on file. 2023.
We even saw increased energy and better sleep.
*statistically significant proportion of subjects agreed compared to disagreed.
Nutrafol. Data on file. 2023.
Benefits you can see and feel.
Formula benefits
- Helps reduce hair shedding
- Visibly thicker hair volume
- Fast-growing, longer, and stronger hair
Nutrafol. Data on file. 2023.
Women also reported
- Reduced feelings of stress
- Supported sleep quality
Nutrafol. Data on file. 2023.
About Nutrafol Postpartum.
A daily hair growth supplement for postpartum women in the first year after giving birth or breastfeeding. OBGYN-developed and breastfeeding-friendly, our formula supports whole-body recovery through vital replenishment with ingredients like Theanine and Shatavari, DHA Omega-3s and Tocotrienol Complex, and Marine Collagen with Nettle and Apple.
We documented their progress.
“I have noticed my hair looks thicker, my curl patterns have come back, my eyebrows look a lot thicker, and my hair length is a lot longer than it was before.”
Lilyana
Taking Nutrafol Postpartum Hair Growth Nutraceutical
In a 6-month clinical study, participants taking Nutrafol Postpartum saw significant hair growth.
Candace
Taking Nutrafol Postpartum Hair Growth Nutraceutical
In a 6-month clinical study, participants taking Nutrafol Postpartum saw significant hair growth.
“I have been taking Nutrafol Postpartum, and I realized that my shedding has significantly decreased, and because of that, my hairline got fuller and my ends got longer. So that was really exciting.”
Neghin
Taking Nutrafol Postpartum Hair Growth Nutraceutical
In a 6-month clinical study, participants taking Nutrafol Postpartum saw significant hair growth.
“My hair is definitely shinier, fuller, and looks like it's gotten longer. Same with my nails, my nails have definitely gotten stronger.”
Jessica
Taking Nutrafol Postpartum Hair Growth Nutraceutical
In a 6-month clinical study, participants taking Nutrafol Women experienced significant hair growth.
How we measure our results.
When it comes to hair, we bring precision to perception. We use a combination of standardized and validated measurements—because there’s no single measurement for hair health.
PhototrichogramAssessing Hair Counts+
A close-up photo of a small area of the scalp, usually using 20x-50x magnification. Phototrichogram analysis allows us to study hair cycle physiology and measurement of various hair parameters directly on people. It is the best non-invasive and reproducible method to quantify hair density and hair growth parameters.
Standardized Global PhotographsAssessing Hair Density+
Standardized head shots taken a short distance away from the subject to capture the entire head from different angles. Global photographic assessment can help determine overall clinical changes in subjects over time in a standardized manner.
Investigator Global AssessmentAssessing Overall Hair Improvement+
A physician’s or dermatologist’s clinical evaluation of subjects’ hair growth and quality compared over time. Assessments are often done in person or based on standardized global photographs using a 7-point scale to measure the overall improvement for hair growth and hair quality.
Pull TestAssessing Overall Hair Improvement+
When a dermatologist or investigator grasps 20-60 hairs and pulls firmly, but gently. If more than 10% of hairs are pulled out of the scalp, this means the pull test is positive and implies active hair shedding. A hair pull test is done to check for active hair shedding, brittleness, and fragility.
Standardized Wash TestAssessing Hair Shedding+
When a subject refrains from shampooing for 5 days, and then their hair is shampooed and rinsed in a basin with the drain covered by gauze. The hairs remaining in the water and the gauze are collected and counted to determine the number of hairs shed while being washed.
Expert or Dermatologist RatingsAssessing Hair Shedding+
When a trained expert and/or dermatologist evaluates changes in hair growth and quality compared to the start of the study—including coverage, volume, length, and strength—using a numerical scale. This assessment is performed in-person.
Validated QuestionnairesAssessing Overall Hair Improvement+
Scientifically validated surveys filled out by people who participate in clinical research that measure improvements in hair, as well as quality of life. These questionnaires have been tested to ensure they produce reliable and accurate results.
Subject Self-AssessmentsAssessing Overall Hair Improvement+
Questionnaires designed to capture perceived changes by the subject. Subjects answer detailed questions on changes they see while using a new product, including hair growth, shine, quality, coverage, and volume, as well as other health and wellbeing changes of interest.
Research that’s vetted by the scientific community.
Our hair health research has been featured in 25+ scientific outlets, including 15+ medical journal publications.
A Novel Multi-Targeting Approach to Treating Hair Loss, Using Standardized Nutraceuticals.
New Insight Into the Pathophysiology of Hair Loss Trigger a Paradigm Shift in the Treatment Approach.
A Six-Month, Randomized, Double-Blind, Placebo-Controlled Study Evaluating the Safety and Efficacy of a Nutraceutical Supplement for Promoting Hair Growth in Women With Self-Perceived Thinning Hair.
Trusted by Doctors.
#1 Dermatologist-Recommended
Hair Growth Supplement Brand*
“Nutrafol is a necessary part of my hair growth protocol since I have personally seen the positive impact it can have on the hair health of my clients.”
Dr. Julie Russak, M.D.
FAAD Board-Certified Dermatologist
“I've been consistently impressed with Nutrafol's Hair Growth Nutraceuticals. I've seen a noticeable improvement in my patients' hair thickness and overall scalp health after three to six months of consistent use.”
Dr. Hope Mitchell M.D.
Board-Certified Dermatologist
“As a physician, it is important that I rely on science when making recommendations for my patients. The clinical studies are clear; it works. My patients have experienced overwhelming satisfaction with Nutrafol, noting significant improvements in visible hair thickness and growth.”
Dr. Rawn Bosley, M.D.
Double Board-Certified Dermatologist
Experts compensated for their opinion and experience.
We’re serious about facts. Ask away.
What is a clinical study?+
How does Nutrafol design their clinical studies and why?+
What is a publication and why does it matter that they are peer-reviewed?+
Peer review involves the evaluation of the article by experts (peers) in the same field as the author(s) of the paper. These experts assess the validity, significance, and originality of the research before it can be published. It verifies the credibility and accuracy of the study's design, findings, and final interpretation before they are shared with the scientific community and the public.
Peer-reviewed publications are considered more credible and reputable, as compared to non-peer-reviewed papers, because their content has been vetted by experts. This helps readers and researchers trust the validity and reliability of the information presented.
What does “statistically significant” mean?+
What is a randomized, placebo-controlled trial?+
When a study is randomized, participants are randomly assigned to different groups. This randomness helps to minimize bias and ensures that the subjects aren't purposely assigned to a group that may change the outcome.
In a placebo-controlled study, one group of participants receives the product or ingredient being tested (the active group), while another group receives a placebo—a dummy product that looks like the real product but has no formula ingredients or therapeutic effect (the control group). This allows researchers to compare the effects of the actual product against those of the placebo.
What does “double-blind” mean?+
Together, all these elements of study design—including double-blinding, randomization, and placebo-controlled—provide highly credible evidence by reducing bias and providing the most rigorous method to examine the efficacy of a product.
Does the FDA require clinical studies for supplements?+
At Nutrafol, we continuously clinically test our products to ensure they deliver real results.