Alpha-hydroxy acids (AHAs) are water-soluble organic exfoliating acids, and they occur naturally in many foods and milk sugars. Among the various types of hydroxy acids, you will find:
Glycolic acid: derived from sugarcane, it is known for its effectiveness in promoting cellular turnover and improving skin texture.
Lactic acid: obtained from milk fermentation, it is gentle and hydrating, ideal for sensitive skin and boosting skin hydration.
Malic acid: extracted from apples, this acid helps exfoliate the skin and enhance its glow.
Tartaric acid: derived from grapes, it helps exfoliate the skin while improving its evenness and radiance.
Citric acid: found in citrus fruits, it is used to adjust the pH of cosmetics and has antioxidant properties.
Mandelic acid: derived from bitter almonds, it is known for its antibacterial properties and helps regulate sebum production.
Pyruvic acid: a powerful exfoliant that can significantly improve skin texture and reduce imperfections like scars and dark spots.
The factors that affect the safety and effectiveness of AHA products include concentration, pH, exposure time, and the amount of free acid present.
For this reason, they should be used carefully to avoid potential adverse reactions such as swelling, burning, and itching. Our top recommendation is to avoid overusing overly high concentrations and long exposure times.
AHAs are typically found in products like toners, serums, peels, and even cleansers: so be careful not to use too many skincare products that contain them. They can end up irritating your skin and being intolerable.
DIFFERENCE BETWEEN ALPHA AND BETA HYDROXY ACIDS
AHAs are short-chain hydroxy acids that act on the outermost layer of the skin, stimulating cellular turnover and improving skin elasticity. Thanks to their properties, AHAs are often used to treat dry, sun-damaged skin or skin with dark spots.
BHAs, on the other hand, are long-chain hydroxy acids that act deeply, penetrating pores to remove excess sebum and dead skin cells. Thanks to the benefits they provide, BHAs (mainly salicylic acid) are used to treat oily, acne-prone skin or skin with enlarged pores.
If a cosmetic product is formulated with both types of these acids, it will deliver a deeper exfoliation full of benefits for the skin. Always remember to follow the instructions for correct product application!