1, a glass of water can distinguish the quality of cosmetics.

There are many cosmetics on the market, which makes MM very picky. Now I'll teach you a trick how to tell! Just a glass of water will do. Why use water? Because we wash our faces with water every day, the molecules of water are close to those of the skin, so anything that can be dissolved by water can be absorbed by the skin. Put a proper amount of foundation or emulsion in water and observe its reaction.

2. Generally, there are three situations: sticking to the rim of the cup, floating on the water and sinking at the bottom of the cup.

These three situations illustrate the components contained in it. Lead, mercury and arsenic contained in cosmetics are the most common heavy metals in cosmetics. According to national regulations, the lead content is less than or equal to 40 mg/kg, the mercury content is less than or equal to 1 mg/kg, and the arsenic content is less than or equal to 10 mg/kg. Professionals say that although many products are now under the banner of pure nature, they are ultimately made of chemicals. Among them, there are some spices, preservatives and photophobes. In order to make huge profits, some businesses put prohibited substances in it, and these harmful substances are hidden in the body like time bombs. Lead and mercury have a good whitening effect in a short time. It is almost impossible for whitening products to contain no lead, because many ingredients are difficult to be absorbed by the skin without the help of lead. Although lead is toxic, the skin has a strong ability to absorb it, so many whitening products rely on lead.