Evaluate the Efficacy and Safety of Hydrolyzed Keratin Peptide Powder on Hair Health

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