The most important clinical feature of skin aging is wrinkles. Over time, volume loss and natural skin thinning occur in the skin due to the decrease in dermal collagen, hyaluronic acid and elastin. This process of dermal atrophy is accelerated by external factors such as sun exposure and smoking. Additionally, hyperdynamic facial muscles contribute to the formation of visible lines and wrinkles. Initially, lines and wrinkles appear during active facial expressions such as getting angry and laughing. These are known as dynamic lines. After a certain period of time, these lines turn into static lines that are seen at rest. Biometric changes such as skin laxity, facial fat distribution and bone resorption contribute to the formation of skin folds and facial contour changes. Additionally, aged skin shows dyschromia such as punctate pigmentation, vascular ectasias such as telangiectasia and cherry angiomas, and benign and malignant degenerative changes.