This study is designed to evaluate the efficacy and safety of Hydrolyzed Keratin Peptide Powder in promoting hair health in adult with mild to moderate hair damage, compared to a placebo control.

Inclusion Criteria:

• Male or female, aged 19 to 60 years
• Subjects with glossy scores between 1 and 3 points on the visual assessment classification and with a total hair damage score of less than 18 points based on exposure to risk factors
• Subjects who will refrain from perms or hair coloring, excluding haircuts, during the clinical study period
• Subjects who have agreed to participate in this clinical trial prior to its commencement and have signed the written informed consent form

Exclusion Criteria:

• Subjects with hair loss conditions such as androgenetic alopecia, alopecia areata, telogen effluvium, or cicatricial alopecia at Visit 1
• Subjects who have taken oral dutasteride or finasteride within 6 months prior to Visit 1
• Subjects who have consumed health functional foods (e.g., biotin) or general foods that may affect the human application study within 2 weeks prior to Visit 1
• Subjects who have applied topical steroid preparations to the scalp for one month prior to Visit 1
• Pregnancy or breastfeeding or planning pregnancy