alfahidroxiácidos

Alfa-hidroxiácidos, often abbreviated as AHAs, are a class of organic compounds characterized by the presence of a hydroxyl group on the alpha carbon atom of a carboxylic acid. In cosmetic and dermatological applications, AHAs are commonly derived from natural sources such as fruits, milk, or sugarcane. Glycolic acid, lactic acid, citric acid, tartaric acid, and malic acid are among the most frequently used AHAs.

The primary mechanism of action for AHAs in skincare is their ability to exfoliate the skin. They work by breaking down the bonds that hold dead skin cells together on the surface of the epidermis, promoting cell turnover and revealing newer, healthier skin underneath. This exfoliation can lead to a smoother skin texture, a more even skin tone, and a reduction in the appearance of fine lines and wrinkles. AHAs can also help to improve skin hydration by increasing the skin's ability to retain moisture.

AHAs are incorporated into a wide range of skincare products, including cleansers, toners, serums, and moisturizers. Their concentration and pH level in a product determine their potency and potential for irritation. While generally considered safe and effective for many skin types, individuals with sensitive skin may experience redness, stinging, or peeling, especially when first starting to use AHA products or at higher concentrations. Sun protection is particularly important when using AHAs, as they can increase the skin's sensitivity to ultraviolet radiation.