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Anti-aging principle of cosmetics
The effects of anti-aging active substances include scavenging free radicals; Increase cell proliferation rate; Delay the degradation rate of extracellular matrix, so anti-aging cosmetics need to choose excellent skin care agents to supplement enough nutrition to the skin to achieve deep nutrition. At the same time, it is also necessary to slow down the loss of skin moisture and protect the skin.
Efficient sun protection and sun exposure are important reasons for accelerating skin aging. Therefore, sun protection and ultraviolet protection are essential products of anti-aging cosmetics.
Deep moisturizing, although there are many factors to promote skin aging, the amount of skin moisture is the main factor to keep skin soft and elastic and prevent aging.
Inhibit the activity of protein poisoning and increase the synthesis of protein. The skin is composed of collagen and elastin, and the state of the skin depends on the loss of protein and the ability of cells in the skin to synthesize protein. Elastin degradation and degeneration after degradation will lead to skin aging symptoms such as elasticity loss, relaxation and wrinkles. Therefore, delaying the degradation rate of elastin is also one of the principles of anti-aging cosmetics design.
Matters needing attention
Citric acid is flammable. Powder and air can form an explosive mixture, which may cause combustion and explosion in case of open flame, high heat or contact with oxidant.
Citric acid monohydrate loses its crystal water in dry air or when heated to about 40℃, and slightly deliquesces in humid air. Dilute citric acid aqueous solution can be allowed to stand and ferment. Therefore, solid monohydrate or anhydrate should be stored in a closed container and in a cool and dry place.
References:
Baidu encyclopedia-citric acid
References:
Baidu encyclopedia-cosmetic