What concentration of salicylic acid can remove acne? Why can salicylic acid remove acne?

Salicylic acid is an important component of most skin care products. It can reduce oil secretion in pores and improve skin acne and pimple problems. However, when we mix salicylic acid, we should pay attention to its concentration, otherwise it will irritate the skin.

0.5%-2%. Generally speaking, salicylic acid in skin care products has certain exfoliating, antibacterial and anti-inflammatory effects at a concentration of 0.5%-2%. If the concentration of salicylic acid is less than 0.5%, and only a part of it is actually dissolved in the product, the effect will naturally be greatly reduced.

If you want to effectively remove acne, you mainly need to find a way to loosen the keratin plugs, pry up the dirt blocking the pores, and control inflammation and inhibit bacteria. Salicylic acid is simply designed by God for acne removal, attacking almost every aspect of acne. The first skill of salicylic acid is to loosen the keratin plugs, and it also warns the keratin cells to stop messing around, cutting off the opportunity to provide new "bricks" for the keratin plugs. The killer feature of salicylic acid is that it can not only inhibit bacteria, but also control inflammation, so that cells do not overreact and reduce the chance of acne.

1. Salicylic acid has the effect of whitening and lightening spots. In the unhealthy keratinocyte layer, there is usually pigmentation on the skin surface, and salicylic acid can help peel off this layer of aging keratinocytes and prevent pigmentation. In addition, salicylic acid can assist the penetration of other acid whitening ingredients, so it is often added to whitening and lightening essences in the form of a complex to help fight potential spots in the bottom layer of the skin.

2. Salicylic acid has the effect of controlling oil and fighting acne. Salicylic acid can break down excess sebum, while inhibiting excessive skin secretion, playing a role in oil control. It also has a strong dissolving effect on keratin plugs and acne formed by sebum blockage, improves the unclean state of hair follicle walls, helps sebum to be smoothly discharged from the pores, corrects abnormal cell shedding, prevents pore blockage for mild acne, and is most effective for blackheads.

3. Salicylic acid has an exfoliating effect. Salicylic acid is fat-soluble and can easily break down excess sebum on the skin surface. It cleans the skin's pores by fusing with lipids and can help exfoliate the skin. However, be careful not to use skin care products containing salicylic acid for a long time, otherwise it will cause the stratum corneum to be too thin, and the skin will become fragile and sensitive without the protection of the stratum corneum.

4. Salicylic acid has the effect of shrinking pores. Salicylic acid can penetrate deep into the pores along the sebaceous glands that secrete oil, which helps dissolve the old accumulated stratum corneum in the pores and improve the blocked pores. It can therefore block the formation of acne and shrink enlarged pores.

5. Salicylic acid has the effect of slowing down the aging process. The stratum corneum of the skin will automatically renew itself. If the old cuticle is not shed normally, the skin will appear rough and dull, and the skin's metabolism rate will slow down. Salicylic acid can remove old cuticle and promote the rapid renewal of epidermal cells. When the epidermal cells are fresh and full of vitality, it will naturally slow down the aging of the skin and restore the skin to a smooth and delicate state.

1. The structure of salicylic acid is very similar to that of aspirin, and it has an anti-inflammatory effect on the skin. Therefore, you should pay attention to sun protection care after use to avoid skin problems such as pigmentation.

2. Pay attention to the pH value of salicylic acid. It must be maintained below 4 to maintain its activity and prevent volatilization.