How to choose the raw materials of cream skin care products?
Cream skin care products are solid or semi-solid emulsions, with two main types: oil-in-water type and water-in-oil type. Generally speaking, oil-in-water creams are easy to spread and have low viscosity. Water-in-oil creams have high oil content, heavy oily feel, and high viscosity, and are generally used to prepare products such as night creams and massage…