Salicylic acid acts on the skin through chemical reaction, which is much better than the pure mechanical exfoliation effect of scrub. Moreover, salicylic acid only acts on the skin surface, and there is no risk of damage to the underlying skin. In other words, salicylic acid only removes dead skin cells and skin damaged by ultraviolet rays, and has no effect on healthy skin.

Salicylic acid is fat-soluble, which makes it easier for salicylic acid to penetrate into pores filled with oil and remove aged keratinocytes in pores, so salicylic acid is used to treat blackheads and acne.

Extended data

Different from other acids such as fruit acid, salicylic acid is a fat-soluble organic acid, that is to say, its function often stays in the surface layer of the skin and does not penetrate into the dermis to play its role, so it is less irritating and sensitive skin can use it with peace of mind.

Salicylic acid can dissolve substances used for cell-to-cell connection, so that aged keratinocytes can quickly fall off the skin surface, thus promoting skin metabolism and restoring the delicate touch of the skin.

Because salicylic acid is a fat-soluble organic acid, it can easily disintegrate excess sebum on the skin surface, inhibit excessive sebum secretion at the same time, and also has a strong dissolving effect on angle plugs and acne caused by sebum blockage, improve the unclean state of hair follicle walls, help sebum to be smoothly discharged from pores, and at the same time quickly dry acne through antibacterial properties.

Reference source Phoenix. Reveal the unknown skin care effect of salicylic acid