Detailed answer

Smoking has been found to decrease collagen production in the skin. Collagen is an essential protein that gives the skin its strength and elasticity. Smoking causes oxidative stress and the release of harmful free radicals which damage collagen fibers. Moreover, smoking reduces blood flow to the skin, impeding the delivery of important nutrients that are necessary for collagen synthesis. Additionally, smoking increases the production of enzymes that break down collagen, further contributing to the loss of collagen in the skin. As a result, smoking accelerates the aging process, leading to the formation of wrinkles, sagging skin, and a dull complexion. Quitting smoking can help improve collagen production and overall skin health.