This study evaluates the efficacy of Scale Media's HLV Clinical Formula Hair Vitamins on the health and appearance of hair, focusing on growth, volume, dullness, overall health, hair shedding, fullness, and strength. It is a randomized controlled trial with 50 female-at-birth participants experiencing self-perceived hair thinning.

Inclusion Criteria:

• Female at birth, aged 35+.
• Self-perceived hair thinning and increased hair shedding for at least three months.
• Consistent hair care routine for at least one month prior.
• Willing to maintain hair care routine, diet, and refrain from new vitamins or supplements targeting hair growth during the study.
• Generally healthy without uncontrolled chronic diseases.

Exclusion Criteria:

• Hair loss conditions other than female pattern baldness.
• Pregnant, breastfeeding, or trying to conceive.
• Currently taking iron supplements or other hair growth treatments.
• Significant chronic conditions or planned medical procedures that interfere with protocol adherence.
• Recent chemical hair treatments or plans for such treatments during the study.
• Severe allergic reactions to the product's ingredients.
• Recent surgeries, major illnesses, or undergoing chemotherapy/radiotherapy.

The plan includes sharing individual participant data (IPD) collected during the study. The data to be shared includes de-identified individual participant data that underlie the results reported in the publication, including text, tables, figures, and appendices.