In fact, high-purity silicone oil is difficult to be absorbed by the skin and is almost non-toxic. The CIR believes that silicone oil can be safely used in cosmetics, and the limits of use are as follows: In hair cosmetics, the limit value is 80% of the mass fraction (that is, the content of silicone oil accounts for less than 80% of the total mass of hair products) , In other cosmetics, the limit