On the difference between fruit acid, AHA and BHA
Fruit acid, AHA (α-hydroxy acid) and BHA (β-hydroxy acid) are often mentioned in the field of skin care, but their differences are difficult for non-intensive researchers to understand.

Among fruit acids, glycolic acid (Glycolic Acid) is a common type. AHA is mostly derived from natural fruits or milk, with small molecules and good hydrophilicity, so it can quickly penetrate into the stratum corneum of the skin. Its main division removes the old waste keratin accumulated on the surface of the skin, accelerating the renewal of skin surface cells. This process is like replacing winter leaves with fresh green in spring, and the skin can regain its luster and feel more delicate and smooth. And AHA can promote the formation of collagen and hyaluronic acid in the dermis, which is like adding bricks to the skin's building, enhancing skin elasticity and fading fine lines and wrinkles.

BHA is a typical representative of salicylic acid, which has lipophilic properties and can penetrate deep into the pores. Just like a diligent scavenger, it can effectively remove oil and dirt in the pores, and has a significant effect on acne, acne and other problems. BHA also has anti-inflammatory properties and is outstanding in relieving skin inflammation. When the skin is red and uncomfortable due to inflammation, BHA is like a good medicine, which can relieve symptoms and calm the skin.

Glycolic acid, as a member of the fruit acid family, has a significant exfoliation effect due to its extremely small molecule and strong permeability. It can gently exfoliate, making the skin's surface smoother and promoting skin metabolism. Glycolic acid also has outstanding performance in improving dullness and brightening skin.

In summary, AHA focuses on surface keratin renewal and promoting dermal material production; BHA specializes in deep pore cleansing and anti-inflammatory; glycolic acid is unique for its strong penetration and exfoliation functions. Although all three are excellent skin care products, their effects are different. Users should choose carefully according to their own skin conditions to achieve the best skin care effect.