The comparison between glycolic acid and lactic acid
Now there are glycolic acid (Glycolic Acid) and lactic acid (Lactic Acid), both of which are commonly used ingredients in skin care. Sunday Riley uses both of these, and their effects have their own strengths. It should be investigated in detail.

For glycolic acid, its molecules are small and can quickly penetrate the surface of the skin. The power of exfoliation is quite significant. It can effectively loosen the connection between keratinocytes, make old waste keratin easy to fall off, and make the surface of the skin smooth and delicate and radiant. It is often used to improve uneven and rough skin tone. If the skin is dull and keratinized, it can be used to see immediate results.

Compared with glycolic acid, lactic acid has slightly larger molecules and has better moisturizing properties. Lactic acid can absorb moisture from the air, hydrate the skin, and maintain the skin barrier at the same time. For dry and sensitive skin, lactic acid is more suitable, because it is relatively mild, it can not only improve the texture of the skin, but also is not easy to cause irritation. It has excellent efficacy in moisturizing and moisturizing the skin, making it soft and elastic.

However, although glycolic acid has strong exfoliation power, if the skin is sensitive and fragile, it is easy to cause redness, swelling and tingling if used improperly. Therefore, for beginners, when starting from a low concentration, gradually increase the dosage and frequency. Although lactic acid is mild, it can be used in high concentrations for a long time, which may burden the skin and affect its own regulation ability.

Sunday Riley's glycolic acid and lactic acid products have their own advantages. For quick skin rejuvenation and exfoliation problems, glycolic acid is the first choice; if the skin is moisturized and gently cared for, lactic acid is even better. Users should choose carefully according to their own skin type and needs to achieve the best skin care effect.