"Early C and Late A" means to use skin care products containing vitamin C in the morning and skin care products containing vitamin A in the evening. The combination of the two can not only whiten and brighten the skin, but also make the skin younger and in better condition.

Skin care products containing vitamin C include prototype VC and VC derivatives. Because VC is a good antioxidant, there are plenty of ultraviolet rays during the day, and skin irradiated by ultraviolet rays will produce a lot of free radicals. VC can resist oxidation and effectively prevent light damage;

Skin care products containing vitamin A include alcohol A, aldehyde A, ester A and so on. Due to the poor stability of VA, it will produce free radicals that will damage the skin after encountering ultraviolet rays, which will easily cause irritation to the skin and even cause allergies and dermatitis. It is more suitable for use at night. Used to help skin resist aging and fade wrinkles.

The above description is the skin care method of beauty circle, but it is worth noting that the skin care concept of "early C and late A" is good, but it is not suitable for everyone. People with impaired sensitive muscles and skin barriers, pregnant women or people with pregnancy plans are not suitable.

Besides, in the network language, morning C and evening A describe the day when contemporary young people go to work. In the morning, C means you need a cup of coffee to start the day's work, and in the evening, A means you need alcohol (alcoholic drinks) to finish the day's work when night falls. This is the life of young people sooner or later.