In today’s society, the major international cosmetics brands have speculation concepts and gimmicks. They use plant extracts, flower extracts, 100% XX liquid, in fact, many brands add in cosmetics but It is far from enough to play a role in maintenance, and on the market, it is impossible to have 100% of the original liquid, even if it is 100%, it is the \”maintenance\” that our skin cannot bear. Because of this phenomenon, formulators often ignore the low-key, safe, and great effect on the skin, \”Allantoin\”.
First of all, our last picture [Molecular Formula of Allantoin]
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What is allantoin?
Allantoin (Allantoin) is an imidazole heterocyclic compound, a derivative of uric acid, and a natural component of human skin. Uric acid acts as an antioxidant and produces allantoin after interacting with free radicals. In 1912, Mocllster extracted allantoin from the underground stems of comfrey plants.
Pure allantoin is a non-toxic, tasteless, non-irritating, non-allergenic white crystal, crystallized in water as single prism or colorless crystalline powder. It can be dissolved in hot water, hot alcohol and dilute sodium hydroxide solution. Slightly soluble in water and alcohol at room temperature, but hardly soluble in organic solvents such as ether and chloroform; its saturated aqueous solution (concentration of 0.6%) is slightly acidic; the pH is 5.5. It is stable in an aqueous solution with a pH value of 4-9. It is also stable in non-aqueous solvents and dry air; it can be decomposed by boiling in a strong alkaline solution and sun exposure.
Allantoin can promote cell tissue growth, metabolism, and soften stratum corneum protein. These properties are especially obvious when allantoin is applied to ulcers and purulent skin, so it has the ability to speed up wound healing and is a good active agent for treating skin injuries.
Allantoin was once known as an anti-irritant, which can effectively reduce the irritation of irritants. At the same time, it is also an antioxidant. Like other water-soluble vitamins, its ability to collect free radicals is similar to that of vitamin C, so it can strengthen cells. The antioxidant capacity. Therefore, the US Food and Drug Administration FDA listed it as the first type of highly effective active component skin care agent, which is non-toxic, non-irritating, and non-allergic.
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In cosmetics, the role of allantoin should not be underestimated
Moisturizing and repairing effect
Allantoin has a good emollient effect, especially for cracked and rough skin, it can restore smoothness and moisturization, and at the same time can enhance the water absorption capacity of the outermost layer of skin and hair, improve the hydrophilic force of keratin molecules, and make it suffer The damaged stratum corneum can be repaired and its natural water absorption capacity can be restored.
Moisturizing effect
Allantoin promotes the water absorption capacity of the outermost layer of the skin and hair, reduces the evaporation of skin moisture, and at the same time forms a lubricating film on the skin surface to seal off the moisture, thereby achieving the skin\’s moisturizing effect.
The role of softening keratin
Allantoin has unique keratin-soluble properties, so it has the effect of softening keratin. It peels off the keratin of metabolic waste products and fills the interstitial spaces with water to make the skin moisturized and shiny.
Anti-inflammatory and antioxidant effects
Because allantoin is an amphoteric compound, it can combine with a variety of substances to form a double salt. It has the effects of preventing light, bactericidal and antiseptic, analgesic, and antioxidant. It is widely used as freckle cream, acne liquid, shampoo, soap, toothpaste, shaving lotion, Additives such as hair conditioner, astringent, anti-perspiration deodorant lotion, etc. are used.
Summarize
Allantoin is a non-toxic, odorless, non-irritating, non-allergenic white powder. It is mainly used as a skin conditioning agent and protective agent, which can help the skin to fight inflammation, soothe and promote cell repair. Allantoin can reduce the adhesion of stratum corneum cells and accelerate the renewal of epidermal cells. Some irritating cosmetics or anti-inflammatory and calming after-sun repair products containing fruit acid and vitamin A will add allantoin to enhance its repair ability. However, the dosage of allantoin is about 0.1%-0.2%, and excessive addition will also cause irritation. However, allantoin is an anti-allergic ingredient on the whole and has a high degree of safety.
