Retinoids are a class of compounds derived from vitamin A that are commonly used in skincare and dermatology. They help to promote cell turnover, reduce the appearance of fine lines and wrinkles, and improve skin texture. Retinoids can be found in both over-the-counter products and prescription medications, making them accessible for various skin concerns. These compounds work by binding to specific receptors in the skin, which stimulates the production of new skin cells and enhances collagen production. Common types of retinoids include retinol, tretinoin, and adapalene. While effective, they can cause irritation, so it's important to start with lower concentrations and gradually increase usage.