Safety Evaluation of Silicone Oil
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The US CIR (Cosmetic Raw Material Evaluation Committee) expert group concluded through a series of experimental data analysis that polydimethylsiloxane, cyclopolydimethylsiloxane, cyclotetradimethylsiloxane, cyclopentasiloxane Oxyalkane, cyclohexylsiloxane, and cycloheptasiloxane are safe as cosmetic raw materials (because of the large variety of silicone oils, the author cannot check them one by one, which does not mean that other silicone oils not listed are not safe). As for the statements that silicone oil is harmful to the human body, it is basically based on animal experiments of silicone oil. For example, the statement that using silicone oil-containing cosmetics caused eye disease, there are indeed animal experiments in which a higher concentration of silicone oil is directly dropped into the eyeballs of animals. The experimental result is that the animal's eyes produce lesions. [1] Since silicone oil has been shown to be harmful to animal health in many animal experiments, silicone oil has been assessed as a potential risk in the risk assessment of some international health agencies. For example, cyclotetradimethylsiloxane, cyclopentasiloxane, and polydimethylsiloxane are rated as medium risk by another US organization that evaluates cosmetic raw materials, the EWG (American Environmental Working Group). However, if the animal experiment results are directly equivalent to the human body, then many drugs on the market need not be sold. These animal experiments use subcutaneous injection, oral silicone oil and other methods to obtain experimental results, while in cosmetic formulas are only external and low concentration, there is no clinical data to support the direct damage of silicone oil to the human body. It is worth mentioning that some studies have shown that silicone oil has a slight deposition in the environment [2]. Therefore, from the perspective of environmental protection, cosmetics manufacturers can take the environment into consideration when selecting raw materials. However, the safety of silicone oil to the human body is beyond doubt, otherwise baby products containing silicone oil will not appear on the market.
In an age where food safety cannot be guaranteed 100%, consumers really can't afford rumors. Some shampoos have such problems, but in addition to silicone oil, there are many ingredients in the shampoo. Can other ingredients such as surfactants, conditioners, preservatives and other ingredients be safe? Merchants do not reflect on the overall formula, but let a single raw material be used, which is extremely irresponsible to consumers. The surgery industry has a specialization. Merchants rely on a little bit of cosmetics knowledge to make gimmicks and gimmicks. Improving product quality and honest management is the long-term strategy.