What can I do to prevent my skin from thinning as I grow older?

Photoprotection #1. 90–95% of skin aging is due to sun exposure—specifically damage done by uv damage to the collagen fibers in the dermis. Wearing a daily sunscreen moisturizer can help. Also using retinoids such as retinol and Retin-A can help to stimulate collagen growth. Eating a healthy diet with a variety of proteins (lean meat and fish ) help build collagen in the skin and hair.