Retinoids are a class of compounds derived from vitamin A that are commonly used in skincare and dermatology. They help promote cell turnover, which can improve the appearance of skin by reducing wrinkles, fine lines, and acne. Retinoids work by increasing the production of new skin cells and enhancing collagen production, making them effective for various skin concerns. There are different types of retinoids, including retinol, tretinoin, and adapalene, each varying in strength and effectiveness. While they can provide significant benefits, retinoids may also cause skin irritation, especially when first introduced. It is essential to use them as directed and gradually to minimize side effects.