Polydimethylsiloxane alcohol (PDMS alcohol) Essential information:
The chemical formula is usually expressed as [- (CH3) 2SiO -] n, where n represents the degree of polymerization.
The molecular weight varies depending on the degree of polymerization.

Characteristic:
It is a colorless or slightly yellow transparent liquid at room temperature.
Soluble in both inorganic and organic solvents.
Has high chemical stability and lubrication performance.

Application:
Used in industry as lubricants, coatings, and preservatives.
In personal care products, it is used to increase the smoothness and luster of hair, and enhance the smoothness of the skin.
It is commonly used in facial moisturizing, eye black, shampoo/conditioner, styling gel, foundation make-up and other products.
Biomedical applications:
Due to its low toxicity and biocompatibility, it can be used for the preparation of medical devices, artificial organs, and biomedical materials.

Security:
PDMS alcohol is generally considered low toxic, but safety precautions should still be taken during use.

In summary, cyclopentasiloxane, cyclotetrasiloxane, and polydimethylsiloxane alcohol are three types of organic silicon compounds with different characteristics and applications. They have a wide range of applications in cosmetics and personal care products, but at the same time, attention should be paid to their safety and usage restrictions.