A 4-week Study Investigating Two Targeted Brightening Serum (A and B) Versus 4% Hydroquinone in Women With Mild to Severe Full-face Hyperpigmentation

This a short four-week pilot study to measure the efficacy and tolerance of two brightening serums (cosmetics) versus 4% hydroquinone. The study was conducted in two sites across the USA, one in PA and in one in CA. The goal was to run the pilot study in the summer to understand the role of these two potential brightening serums in helping the appearance of skin tone evenness.

NCT Number	NCT07644871
Lead Sponsor	Revision Skincare
Conditions	Hyperpigmentation, Melasma, Dark Spots
Enrollment	18 participants
Start Date	2025-08-11
Primary Completion	2025-11-12 (estimated)
Study Completion	2025-11-12 (estimated)
Updated on ClinicalTrials.gov	2026-06-12