However, the reason why cosmetic formulators are attracted to silicone oil is that it is cheap and is an excellent substitute for natural oils. And while the prices of other cosmetic raw materials are rising, the price of silicone oil raw materials has fallen instead.

So are silicone oil raw materials "safe"?

Silicone oil has no taste or smell, and it does not irritate the human senses or the skin, but this does not mean that it is absolutely safe. It still has the following safety hazards:

a. Trace residual D4

Silicone oil products are not 100% pure substances. They still contain some impurities, among which D4 is the most worthy of our attention. D4 is highly volatile and easily absorbed by the human body. There have been speculations internationally about "D4 affecting human reproductive ability", and some cosmetic companies have also begun to standardize the D4 residue in silicone oil raw materials during the raw material acquisition process. It can be seen that although there is no clear research data to prove the harm of D4, we cannot deny its potential safety hazards.
Cosmetic silicone oil products are as follows: https://www.personalcaresilicone.com/productcategory-cosmetic-silicone-elastomer-.html