This clinical study will compare the efficacy of using one fingertip unit and two fingertip units of 0.05% before and after 30% trichloroacetic acid chemical peel procedure for facial skin rejuvenation in 35-60 years old female patients with Glogau II-III skin classification.

This study is an experimental study with a randomized controlled trial (RCT) design on patients who met the inclusion criteria. Group A will receive pretreatment in the form of 0.05% tretinoin cream which is used as much as one fingertip unit every night, and group B will receive the same cream which should be used as much as two fingertip units. This cream will be used for two weeks before the patients receive a chemical peeling therapy using 30% trichloroacetic acid. The results of therapy will mainly be assessed based on the Dermoscopic Photoaging Scale (DPAS), as well as visual analog scale (VAS) for subjective symptoms and Clinician Erythema Assessment Scale (CEA) for erythema.

Inclusion Criteria:

• Female patients aged 35-60 years old
• Patients with Glogau II-III skin classification
• Patients are willing to participate in the study and sign an informed consent form

Exclusion Criteria:

• Patients with hypertrophic scars or keloid on the face
• Patients with open wound or infection on the face
• History of other topical treatment on the face within 1 month of enrollment
• Pregnant or breastfeeding mother
• Patients and/or their families are not willing to participate in the study.