1. Introduction to Betaine
 
Betaine is not unfamiliar to everyone. It is found everywhere. Rattleine is also known as trimethylglycine. It is an all-natural and edible amino acid base that can be used in food fermentation. Alkaloids are naturally present in many plants such as beets, spinach, malt, mushrooms and Fruits, stings of lobsters, and aquatic crustaceans, including human livers, have such cosmetic-grade betaine, which is mostly obtained by extracting from the molasses of beet roots by chromatographic separation technology. It is a fast-absorbed, active alkali that is generally considered as an intermediate product of the metabolism of living organisms and may be used as a methyl donor to participate in the synthesis of methionine.
 
2. The application of betaine in personal care products
 
The hydrogen atom of the carboxyl group in the betaine forms a strong hydrogen bond to change the activity of the water. The N atom in the alkali attracts the negative charge and is connected to the N atom in the state of the methyl repellent, and the betaine binds in the aqueous solution. Betaine is also easily replaced by another-molecular water, which means that it stays for a shorter time than other moisturizers. Unlike many other carriers in the true sense, it can easily release water molecules into the surrounding environment when physical conditions change, allowing water to be fully utilized by living cells.

3. Can relieve stress
 
Modern research has shown that betaine mainly has the ability to quickly improve skin and hair. It has unique moisturizing and cell membrane protection properties, while increasing the solubility of active ingredients in water, reducing the irritation of sex agents or fruit acids to the skin. Alkali has been widely used Personal care products such as skin care products, hair care products and oral care products


4. Unique moisturizing and protecting cell membrane performance
 
Organic osmotic substance protects the internal metabolic activity of cells, resists osmotic pressure acid and derivatives and other betaine is a major organic osmosis. Scientific research has shown that the content of betaine in biological cells in the environment with dryness or higher salt content The more skin cells accumulate or release organic osmotic substances to change the concentration and volume balance of the osmotic substances inside the cells. Osmotic pressure such as skin epidermal dehydration or exposure to ultraviolet rays will cause the skin cells to increase in osmotic substances and cause epidermal cell apoptosis. It can significantly inhibit this alkaline care product, which acts as an organic penetrant to protect the cell's osmotic balance by penetrating the stratum corneum of the skin, thereby increasing the water content of the superficial skin. The unique moisturizing mechanism of betaine makes it commonly used compared with sodium hyaluronate, betaine can still have a long-lasting moisturizing effect even at a very low concentration. The ⅥCHY Runquan deep moisturizing product of L'Oréal of France adds the tap water to the deep moisturizing advertisement, which attracts the deep moisture of the skin to the dehydrated epidermis, so that the surface skin contains sufficient water.

5. Reduce the irritation of detergents and fruit acids
 
Betaine also has the effect of anti-allergic and reducing skin irritation. In 1% sodium lauryl sulfate (SLS, K12) and 4% cocamidopropyl betaine (CAPB alkali (Bet) solution, then the transdermal moisture flow is measured, see the results Figure cavity mucosal irritation. According to the anti-allergic anti-dandruff of betaine in anti-dandruff shampoo products, the addition of betaine significantly reduces the irritation of surfactants on the scalp and effectively improves the scalp itching after washing. At the same time, it can improve the wet combing effect of the hair and prevent the hair from getting tangled. It can also be used in hair care and hair care products. Its excellent nature imparts luster to the hair and increases the moisture caused by the hair. This performance has been widely used in cleansing. A group of interesting experiments such as milk, shower gel, shampoo and emulsifier also proved that although the betaine solution is weakly acidic (1% betaine fruit shows that betaine can slow the solution, see Figure 4, the gentle fruit acid skin care product. Thereby, it can significantly improve the irritation and allergies caused by the low pH of the fruit acid type anti-aging care acid.
 
6. The solubilization performance of betaine
 
It shows that 50% betaine solution can dissolve 2% urealine at room temperature, which is four times the solubility of urealine in pure water. This property first dissolves betaine with deionized water, prepares a 50% betaine solution, then adds urea, and stirs it fully until it is completely dissolved, and then adds the remaining deionized water and stirs the solution to a degree of 0.2%. In 50% betaine aqueous solution, the solubility of salicylic acid can be improved at room temperature

7. Betaine based on the summary of the above
 
Betaine has the unique properties of linking water and protecting cell membranes. It also has many excellent functions, ability, anti-irritation of surfactants, acid buffering capacity, good skin feel and specific dissolution, etc. The alkali is derived from natural safety without irritation. It is non-allergenic and has a high degree of biocompatibility, so the market of nursing products will have broad prospects.