Short-chain hydroxy acids (SCHAs) and their derivatives are a class of organic compounds with diverse applications in the cosmetic, pharmaceutical, and personal care industries. These compounds typically contain 2 to 6 carbon atoms, including a hydroxyl group (-OH), which imparts unique properties such as mild exfoliation and hydration. Common examples include glycolic acid (C1H2O3) and lactic acid (C3H6O3). In skincare products, SCHAs are known for their ability to gently dissolve dead skin cells, enhance cell turnover, and improve the appearance of fine lines and wrinkles. Their low molecular weight allows them to penetrate the skin more easily compared to longer-chain acids, making them suitable for sensitive skin types. Moreover, derivatives such as 1,3-dihydroxyacetone (DHA) are used in self-tanning products due to their ability to react with skin proteins to produce a natural-looking tan. Additionally, these compounds can be formulated into various product types including lotions, serums, and masks, offering users a wide range of benefits. In summary, short-chain hydroxy acids and their derivatives play a crucial role in modern dermatological treatments and personal care products, providing effective solutions for skin rejuvenation and protection.