Glycerin for hair is widely used due to its softening and water-holding properties. Often, it acts as a solvent for a number of substances, such as flavors. Also, this component is a good solvent for many oils and is used as an emulsifier to add oils to the formulation of cosmetics. Often it is added to the formula of cosmetics to create a thick and velvety texture.
Glycerin well moisturizes and helps retain moisture in the hair, which is very useful for dry and curly hair and skin. It is very hygroscopic and in a concentrated form it can draw water from the skin to form bubbles. In diluted form, as it is used in cosmetics, glycerin for hair and skin is completely safe.
When using glycerin for hair, you need to remember that as one of the water-holding substances, it is very sensitive to environmental humidity. In very dry weather, cosmetics with a high content of glycerin can cause dry hair, and in high humidity, on the contrary, it is very moisturized, which is especially bad for very curly hair. But if it is combined in composition with oils and water, then such a product will be effective regardless of the climate and time of year.
Applying glycerin on the hair you need to remember that it conducts heat well, especially in comparison with silicones, proteins and polyquaterniums. Therefore, if protection against temperature is necessary, glycerin for hair is used in small quantities together with insulating and protective moisturizing components (thermal protection).
Since glycerin dissolves many substances well, it is worthwhile to be cautious to people who dye their hair with seven-permanent dyes, as it can quickly wash the color from the hair. Similarly, glycerin will contribute to the fading of the color of dyed hair with permanent and demi-permanent paint. By itself, this component does not lighten the hair, however, if there was a fresh dyeing, it contributes to the leaching of color from the hair, similarly to a deep cleaning shampoo. After 48 hours after dyeing, when the color is fully entrenched on the hair, the use of glycerin will no longer affect the leaching of color. But up to this point on the use of care with glycerin should be abandoned.
Often used glycerin in the composition of shampoos, where by passing the solvent properties helps to lower the freezing point of the finished product. Indeed, shampoos, like many other products for hair and skin, contain large amounts of water that freezes at 0 ° C. This temperature is often in winter in our climate and can be a problem. Since, as it freezes, the product can not only deteriorate, but break the capacity in which it is located. This would create huge problems when transporting cosmetics in the winter, but this is not the case, and modern cosmetics can withstand fairly low temperatures. This is due to glycerol and similar products that lower the freezing point and make them stable in the winter.
