Effects of CosmeRNA Brow Revitalizing Serum on Eyebrow Density and Length

This study evaluated the effects of CosmeRNA Brow Revitalizing Serum on eyebrow density and length in healthy Korean adults. Each participant applied the investigational serum to one eyebrow and a control serum to the other eyebrow once daily for 8 weeks. Eyebrow density and length were assessed before product use and after 4 and 8 weeks of use. Product compliance, participant-reported outcomes, and skin adverse reactions were also evaluated.

Inclusion Criteria: * Healthy Korean adults aged 20 years or older * Individuals who received sufficient information about the purpose and procedures of the study and voluntarily signed the informed consent form * Individuals without acute or chronic physical illnesses, including skin diseases * Individuals able to participate in follow-up assessments throughout the study period Exclusion Criteria: * Individuals who were pregnant, breastfeeding, or planning to become pregnant * Individuals with a psychiatric disorder or an infectious skin disease * Individuals who had used a topical corticosteroid for the treatment of a skin disease for 1 month or longer * Individuals who had participated in the same study within the previous 6 months * Individuals with sensitive or hypersensitive skin * Individuals with abnormal skin findings at the assessment area, including moles, acne, erythema, or telangiectasia * Individuals who had used cosmetics, medications, or other products with the same or similar claimed effects on the assessment area within the previous 3 months * Individuals who had received dermatologic or cosmetic procedures on the assessment area within the previous 6 months, including liposuction, laser treatment, ultrasound-assisted fat reduction, or other skin care procedures * Employees of the study institution * Individuals considered unsuitable for study participation by the principal investigator