On the relationship between fruit acid and sunscreen
Fruit acid has a unique skin care effect, but when it is applied, the sun protection must not be ignored.

Fruit acid can accelerate the metabolism of the stratum corneum of the skin, making the skin more delicate, but also make the skin more sensitive to ultraviolet rays. This is because the stratum corneum becomes thinner after the action of fruit acid, and its resistance to ultraviolet rays is reduced.

In sunlight, ultraviolet rays are divided into UVA and UVB. UVA can penetrate deep into the dermis of the skin, causing skin aging and wrinkles; UVB mainly acts on the epidermis, causing sunburn and erythema. When the skin is treated with fruit acid, the protection against UVA and UVB decreases.

Therefore, when using fruit acid, sunscreen must be used. The first method of sunscreen is physical sunscreen, such as going out with long-sleeved clothes, wearing a wide-brimmed hat, and holding a parasol to avoid direct sunlight. However, only physical sunscreen, or it is difficult to be comprehensive, still need to be combined with chemical sunscreen. Chemical sunscreen can absorb ultraviolet rays, convert them into heat energy emission, and reduce the damage of ultraviolet rays to the skin. When choosing sunscreen, choose the one with the appropriate sunscreen index. For daily indoor activities, choose SPF 15-30 products; if you are outdoors for a long time, you need to choose SPF 30 or above, and PA ++ or higher protection level to effectively resist UVA.

In short, during the use of fruit acid, sunscreen is the key to skin care. Physical and chemical sunscreen can be used together to protect the skin from ultraviolet rays during the action of fruit acid, achieving the ideal skin care effect.