A Randomized, Placebo-controlled Clinical Study Evaluating a Dietary Supplement for Hair Growth.

Objective: The desire for improved hair appearance, hair growth and strength are common drivers of supplementation for women experiencing thinning hair. This study examined the effect and safety of a gummy supplement containing B vitamins, zinc and botanical ingredients to improve hair growth, strength and perceived hair quality outcomes. Methods: Healthy females (n=65) ages 18 to 60 with thinning hair were enrolled. After obtaining consent, subjects were evaluated for hair density and tensile strength, then randomized to either a placebo or test product. The test product consisted of two gummies consumed daily. Subjects returned after six months and were again evaluated using phototrichogram for hair density and tensile strength assessment and completed a Self-Assessment Questionnaire reporting hair quality outcomes. Results: Subjects who consumed the test product showed increased hair density between baseline and 6 months (10.1% increase, Limitations: This study did not assess hair for longer than a six-month period and utilized subject perception for outcomes that differ from clinical assessments. Conclusion: Daily use of a dietary supplement gummy was associated with significant improvement in hair growth as well as self-assessed improvements in hair strength, shedding, and appearance.