AHA (alpha-hydroxy acids) and BHA (beta hydroxy acids) are both types of exfoliating acids that are commonly found in skincare products. They work by helping to remove dead skin cells and improve the overall texture and appearance of the skin.
AHAs, such as glycolic acid and lactic acid, are water-soluble and can penetrate the surface of the skin to exfoliate dead cells and promote cell turnover. This can help to reduce the appearance of fine lines, wrinkles, and uneven skin tone. AHAs also have moisturizing properties, which can improve the overall hydration of the skin and make it look plumper and more youthful.
BHAs, on the other hand, are oil-soluble and can penetrate deeper into the pores to unclog them and reduce the appearance of blackheads and acne. Salicylic acid is a common BHA used in skincare products. BHAs also have anti-inflammatory properties, which can help to reduce redness and irritation associated with acne.
Both AHAs and BHAs can be effective at improving the overall appearance of the skin, but they work in slightly different ways and may be more beneficial for different skin types. While AHAs are generally better for those with dry or sensitive skin, BHAs are generally better for those with oily or acne-prone skin.