1. Glycerin
Glycerin is currently a very safe and stable moisturizing ingredient, which is basically not allergic to all people. Therefore, glycerin can be chosen as the main moisturizing ingredient if you are allergic to other skin care products during the sensitive period. However, due to the strong water absorption of glycerin, special attention should be paid to the concentration of glycerin and the external environment temperature in the area. Avoid glycerin finally absorb water from the skin, moisturizing not but further aggravate the skin dehydration.
2. Urea
Don't panic when you see the name urea, this is not the same as the urea used for fertilization in our urine, although urea in skin care products is closely related to fertilization, but the urea in skin care products is purified and very complex post-processing manufacturing, can be directly used on the face, and because it is imidazole heterocyclic compounds, so in addition to having moisturizing effect, It can also help skin cell regeneration, soften cutin, enhance skin protection and health, in combination with other products, especially anti-inflammatory ingredients, can enhance the penetration of other ingredients, but after all, it is still urea, so control the amount is very important, if the content is too high easy to bring sour smell.
3. Amino Acids
Amino acid moisturizing ingredient is a zwitterionic type of highly effective moisturizing agent, a pure natural structural substance, natural and inherent moisturizing ingredient, its ability to retain water is stronger than any natural or synthetic polymer, its moisturizing performance is 12 times that of glycerin, has a high degree of biocompatibility, and is highly soluble in water. The principle of amino acid moisturizing is to capture water through the positive and negative poles in its molecules. By capturing a molecule of water, it can form a film on the surface of the skin, sealing the water in the skin to prevent water evaporation. On the other hand, because it is a component in the cell, it does not hinder the skin's absorption of air moisture, so as to maintain the appropriate humidity of the skin.
4. Oligopeptide-1
As a moisturizing component of skin care products, oligopeptide-1 is often confused with the oligopeptide-1 previously touted as a divine object, but in essence, the two are completely different things. The moisturizing component of oligopeptide-1 is a synthetic peptide composed of three amino acids, which is also called tripeptide-1, because its components are mainly composed of amino acids, so it has the moisturizing component of amino acids. The real name of the oligopeptide-1 that was previously blown by the market as a divine thing is human oligopeptide-1, also known as epidermal growth factor, mainly used in the medical field, due to its large molecular weight, it is difficult to be absorbed under the normal skin barrier, so it is currently not used as a cosmetic raw material based on effective and safety considerations.
Panthenol, also known as vitamin B5, can be divided into three types: mixed (DL-type), right-handed (D-type) and left-handed (L-type), of which only right-handed panthenol has biological activity, so the cosmetics industry is mainly based on D-panthenol, plus it is an important nutrient component of human skin, so it can directly infiltrate the stratum corneum, with strong hygroscopicity. It can increase the water content of stratum corneum and reduce the water loss through the skin.
6. Aloe vera, tremella, seaweed extract
At present, plant extracts are widely used as moisturizing ingredients, including aloe gel extract, tremella extract, and seaweed extract. They rely on polysaccharide components contained in plants and water absorption characteristics to achieve hydration purposes. Since these components are mainly extracted from natural plants, they are relatively safe. It is the only choice for some people who pursue natural substances.
