C in the morning, A in the evening. Literally, vc in the skin care product is used in the morning, and va in the skin care product is used at night. As long as our daily serious skin care only seeks one goal, that is to slow down aging. Early C and late A are equivalent to resisting oxygen free radicals during the day and repairing the skin at night. These two ingredients are used together to keep the skin in the best condition.

First, the effect of early C.

Vc is one of the most common antioxidants, which can be used at night, and only in broad daylight can it play its greatest practical role. During the day, ultraviolet rays will cause a lot of oxygen free radicals to the skin, and vc has high oxidation and becomes a cleaner of oxygen free radicals. However, VC loses its vitality as soon as it comes into contact with ultraviolet rays, so don't forget to do a good job of sun protection after using VC skin care products. But some people will turn yellow after using it, because vc is oxidized and the stratum corneum becomes thinner and yellow. This situation can be recovered by washing your face.

Second, the influence of late A

VA is actually retinol, and it is really an all-around player in skin care, promoting the formation of collagen, accelerating cell metabolism, diluting fine lines and delaying aging. One of the biggest disadvantages of va is that it can't see the light. When it comes to ultraviolet rays, they not only don't help but also do bad things with good intentions, causing irritation and skin allergies to the skin. Therefore, va products are recommended to be used at night.

Morning c refers to the use of products containing vitamin c in morning skin care, which can resist oxidation and aging. Using skin care products containing VA at night, generally using Achun's products, that is, retinol, has obvious anti-aging effect. The order of skin care is: anti-oxidation during the day, anti-light damage at night, and promoting collagen production. The easiest way to start C early and A late is to add vitamin C and vitamin A derivatives in your existing skin care steps.

Precautions for pre-C and post-A use: vc and va are both active ingredients, which have certain irritation. Do not use skin to protect damaged skin. Collective use is prohibited during pregnancy, pregnancy and lactation. Pay attention to sun protection and isolation. Although vc can reduce ultraviolet damage, it is not a sunscreen. Sun protection and isolation of vc have two-way effects, and fair skin heals faster. Va stimulation is relatively high. At first, it can be used gradually from a lower concentration, slightly applied, gradually increased, and the concentration value increased to create skin tolerance.