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Control group:Subjects in this group are given a matrix sample without active ingredients and are required to use the sample as instructed.

2 trials

Sponsors

Dematology Hospital of Southern Medical University

Conditions

Healthy females or males aged between 18 and 60 years old, those who are positive in the lactic acid stinging test, with sensitive, reddish and dry facial skin, and the ITA° value of the normal facial skin being between 28° and 41°. The tested area has been diagnosed by a clinical doctor as melasma or seborrheic keratosis, and there is at least one part where the difference in ITA° value from the

Unknown Phase

The Human Efficacy Evaluation of HBN a-Arbutin Yaoguang Light-Transmitting Micro Essence: A Randomized Double-Blind Placebo-Controlled Study
Active, not recruitingChiCTR2500109453
Dematology Hospital of Southern Medical UniversityHealthy females or males aged between 18 and 60 years old, those who are positive in the lactic acid stinging test, with sensitive, reddish and dry facial skin, and the ITA° value of the normal facial skin being between 28° and 41°. The tested area has been diagnosed by a clinical doctor as melasma or seborrheic keratosis, and there is at least one part where the difference in ITA° value from the
Start: 2025-06-10Updated: 2025-09-22
The Human Efficacy Evaluation of HBNa¯ Arbutin Yaoguang Light-Transmitting Micro Essence Cream: A Randomized Double-Blind Placebo-Controlled Study
Active, not recruitingChiCTR2500109417
Dematology Hospital of Southern Medical UniversityHealthy females or males aged between 18 and 60 years old, those who are positive in the lactic acid stinging test, with sensitive, reddish and dry facial skin, and the ITA° value of the normal facial skin being between 28° and 41°. The tested area has been diagnosed by a clinical doctor as melasma or seborrheic keratosis, and there is at least one part where the difference in ITA° value from the
Start: 2025-05-16Updated: 2025-09-22