Nutrafol Study Demonstrates 19–37% Faster Hair Growth in Women Using Multi-Targeting Nutraceuticals
核心洞察
A six-month prospective study published in *Dermatology and Therapy* showed Nutrafol's hair growth nutraceuticals increased linear hair growth rate by 19% to 37% in 180 women aged 18–70 (p<0.001).
The study is notable for measuring linear hair growth rate (LHGR), a technically demanding endpoint rarely assessed in clinical hair research, using Canfield HairMetrix imaging technology.
Participants also experienced statistically significant increases in anagen hairs, total hair count, terminal hair count, and scalp coverage, with self-assessments reflecting consistent improvements.
A new peer-reviewed clinical study published in Dermatology and Therapy has demonstrated that Nutrafol's multi-targeting hair growth nutraceuticals produce statistically significant improvements in linear hair growth rate (LHGR) in women, with hair growing between 19% and 37% faster than at baseline over a six-month period (p<0.001). The findings, first presented at the 2026 World Congress for Hair Research (WCHR) in Seoul, South Korea, add to a growing body of evidence supporting the use of nutraceutical interventions for female hair health.
The prospective, open-label, randomized study followed 180 women between the ages of 18 and 70 who took one of Nutrafol's Hair Growth Nutraceuticals tailored to different life stages, including postpartum and menopause. Participants were evaluated at baseline, day 90, and day 180 using Canfield HairMetrix imaging technology, alongside validated self-assessment questionnaires.
Linear Hair Growth Rate: A Rarely Studied Endpoint
According to principal investigator Dr. Raja Sivamani, MD, MS, AP, a board-certified dermatologist, LHGR represents a technically demanding endpoint that is infrequently measured in clinical hair research. "Measuring linear hair growth rate is rarely done in clinical hair research because the technical demands are significant, you need to have the right type of validated equipment, and many therapies simply don't measure or report it," Dr. Sivamani said. "That's what makes this data stand out — it is the kind of finding that should shift how the field evaluates approaches to assess hair thinning (搜索) and hair health."
He added: "The speed of hair growth is something patients notice and care about deeply, and it's exciting to see a multitargeting nutraceutical approach validated on this dimension alongside the other improvements we've seen."
Additional Efficacy Outcomes
Beyond faster hair growth, results demonstrated statistically significant increases in anagen (actively growing) hairs across all study groups. The study also confirmed prior clinical evidence related to total hair count, terminal hair count, and overall scalp coverage. Participants' self-assessments reflected improvements consistent with the objective clinical findings.
Dr. Isabelle Raymond, Senior Vice President of Global Medical and Clinical Affairs at Nutrafol, emphasized the company's commitment to rigorous endpoints: "We don't just invest in clinical research — we invest in studying the endpoints that matter most to physicians and consumers, even when they're technically challenging to measure. This study strengthens the clinical evidence supporting our Hair Growth Nutraceuticals, reinforcing the efficacy of our final formulations in helping women across life stages achieve healthier, faster-growing hair."
Clinical Context and Research Program
Hair thinning (搜索) affects millions of women and can result from hormonal changes, nutritional status, aging, postpartum recovery, and lifestyle factors. Previous research has shown that thinner hair fibers often grow slower, making linear hair growth rate an important measure of hair health.
The research was authored by Rubaina Dang ND, Raja K. Sivamani MD MS AP, Adina Hazan PhD, and Isabelle Raymond PhD. The findings were initially presented as an abstract at the 2026 WCHR in May 2026 before undergoing peer review and publication.
Nutrafol, the #1 dermatologist-recommended hair growth supplement brand according to the IQVIA ProVoice survey for the 12 months ending March 31, 2026, has now completed 26 clinical studies, including three randomized, placebo-controlled trials. The company's physician-formulated, drug-free supplements are tailored to address underlying causes of hair thinning (搜索), including stress, hormones, lifestyle, metabolism, nutrition, and aging. Nutrafol is also the first and only hair growth supplement brand to earn NSF Certified for Sport® certification.