Photoaging is premature skin ageing resulting from extended and recurring publicity to photo voltaic radiation. Characteristics of photoaging include high-quality and coarse wrinkles, improve in skin pigmentation, and loss of elasticity. In human skin, topical retinoids enhance collagen generation, induce epidermal hyperplasia, and decrease keratinocyte and melanocyte atypia. Topical ... https://louismrnjb.blogproducer.com/29512362/what-does-tretinoin-mean