Take a small amount of cream in a stainless steel spoon and heat it with an alcohol lamp or candle. Standard products will be like boiled milk, with the same taste and stronger flavor. If there is a splash, smoke and choking smell when burning, there is oil residue at the bottom of the spoon after burning, indicating that the mineral oil exceeds the standard or is filled with boride.

Pour a small amount of emulsion into water: if the emulsion floats on the water, it means that the emulsion floats on the water, which means that it contains oily resin. Oilstone esters can cause dry skin and clogged pores.

If the emulsion sticks to the cup, it means that the main component of skin care products is mineral oil, as long as it is within the specified range, it will not affect the skin, but the formed protective layer will make the air permeability of the skin layer worse and form closed acne.

If the emulsion sinks to the bottom of the cup, it means that the main components of skin care products are heavy metals, which will cause great harm to the skin if used for a long time. If the emulsion is mixed with water, it is a safe skin care product, which can be dissolved in water and will certainly not cause harm to the skin. Shake the container gently. If the liquid turns milky white, it means that the emulsion contains emulsifier, which may destroy the skin tissue structure and lead to skin allergy.

Excellent emulsion (white):

Inferior emulsion (yellowing):

Extended data:

The difference between skin care water and emulsion:

1, different components. Skin care water is also called toner, moisturizing water and astringent water, and its main component is water. The main component of emulsion is also water. But the difference is that the emulsion contains a certain amount of oil. Water and oil are fused by emulsifier to form cream and emulsion. The oil can form a protective film on the skin surface to ensure that water will not be lost.

2, the effect is different. The function of skin care water is mainly to help skin replenish water, shrink pores and improve skin firmness after cleansing. Lotions and creams are usually used after using toner. In addition to moisturizing and nourishing the skin, they also have certain moisturizing and protective effects, which toner does not have.

3. The order of use is different. Water and emulsion for skin care have different functions and components. Rinse with skin care water twice before using emulsion.

People's Daily Online-Evaluating the Safety of Cosmetics with Clear Water