Detailed answer

Smoking damages the collagen and elastin fibers in the skin, which are responsible for maintaining its elasticity and firmness. The harmful chemicals in tobacco smoke cause a decrease in collagen production and accelerate the breakdown of existing collagen and elastin. This leads to the loss of skin elasticity and the formation of wrinkles, fine lines, and sagging skin. Additionally, smoking constricts blood vessels and reduces blood flow to the skin, depriving it of essential nutrients and oxygen, further exacerbating skin sagging. Quitting smoking can help slow down the progression of sagging skin and improve overall skin health.