Anatomy of a wrinkle
The lines that appear actually result from muscle movement and the passage of time. You may have heard the expression "wearing your emotions on your sleeve," but in reality you wear them on your face. If you're angry or annoyed, for example, you knit your brows together.
Underneath your skin, your facial muscles contract, cause a pleating of the overlying skin, and then, as anyone can see, you're frowning. After years of crinkling and wrinkling, those lines start to linger longer and can become more pronounced. For those whose faces tend to be more animated and whose skin is typically more delicate, these lines may appear exaggerated and more permanent. Botox can relieve the constant contraction of the muscle leaving the skin surface relaxed and wrinkle free.