What is the use of glycerin in cosmetics?

Glycerin is one of the basic ingredients found in cosmetics such as moisturizers and lotions. Besides, it is increasingly popular to buy and use glycerin in its pure form. So what is the use of glycerin in cosmetics?

Glycerin, also known as glycerol, is a natural compound derived from vegetable oils or animal fats. This is a clear, colorless, odorless liquid with a sweet syrupy taste. Glycerin is a humectant, which works to hydrate the outer layer from the deepest layer of the skin.
According to many studies, glycerin is "the most effective humectant" compared to other ingredients such as: alpha hydroxy acids (lactic acid and glycolic acid), hyaluronic acid, propylene glycol and butylene glycol, sorbitol, urea. ..

Glycerin in skin care products has been shown by many studies to bring many benefits to the skin. Specifically:
Glycerin works to hydrate the outermost layer of the skin (the stratum corneum) Improves skin barrier function and skin mechanical properties Works to protect and resist skin irritants Accelerates wound healing Improves skin's resilience and youthful appearance. Glycerin is also involved in the transport and action of aquaporins on the surface of the skin. Aquaporins are proteins that conduct the flow of important moisturizers (including water and glycerol) to the top layers of the skin. They play an important role in maintaining the skin's moisture balance, keeping it feeling smooth and comfortable even in drier climates. Glycerin has been recognized as safe by the Food and Drug Administration. Therefore, in addition to being a humectant, glycerin also has other uses such as:
Laxative (absorbs water into the intestines to treat constipation) As one of many ingredients for pharmaceutical preparations Sweeteners Sweeteners Special Preservatives

One of the risks that you may face when using glycerin is irritation, skin allergies. Glycerin attracts water from the lowest layers of the skin. This can dehydrate the skin, even leading to blistering levels. Therefore, experts recommend that when using pure glycerin, it should be diluted first.
You can dilute glycerin with rose water , because rose water hydrates the skin and shrinks the pores . A 2011 study found that rose has an antioxidant effect on the skin. In addition, the combination of glycerin, hyaluronic acid and Centella asiatica extract improves skin barrier function up to 24 hours after application.
If you experience redness, itching or a rash after using glycerin, stop using glycerin in cosmetics. You can find an alternative that doesn't contain glycerin, and be sure to read the label carefully.
To summarize, glycerin is a very little noticed but highly effective skin care ingredient. However, it can also pose certain risks. You should consult a specialist before using this product.

Reference source: healthline.com - paulaschoice.com