Cleansing milk 1, there is a light fragrance, squeezed in the hand should be water melting, no greasy feeling of the. 2, with fire, put the cleanser into the spoon, with fire, if splashing oil, it is not a good cleanser, if the more you burn like milk, it means it is a good cleanser. 3, take the PH test paper to try to know, directly squeeze it onto the test paper you will know Makeup 1, shake hard, after shaking to see the bubbles. (1) bubble very little, indicating less nutrition. (2) bubble more but big, that contains salicylic acid. Salicylic acid skin cleansing effect is better, but the irritation is easy to allergic. (3) bubbles a lot of very fine, and quickly disappeared, indicating that contains alcohol. Do not use for a long time, easy to hurt the skin’s protective film. (4) bubble fine and rich, there is a thick layer, and long lasting, that is good water. 2, good quality non-alcoholic smell. Bad use of a cool feeling, smell some alcohol. 3, the general makeup water have color, if the storage location is not appropriate, often by the sun’s exposure or stored for too long, the color will fade; 4, the bottle of toner is non-transparent, absolutely do not buy. The reason is that it is impossible to identify. Lotion 1, smell the smell. A good product is pure and does not need a strong fragrance to suppress the product odor. 2, if it is a lotion, take a glass of water, pour the lotion into the water a little, if floating in the water above, prove that the inside contains oleoresin capsules (which is not recommended for cosmetics now), shake a little, the water becomes milky white, proving that the inside contains emulsifiers, such cosmetics are not good. If you pour it in the water and the emulsion sinks to the bottom, it proves that it does not contain oleoresinolates, so it can be used. Oleoresinolates can harm the skin and cause dryness and dehydration because they are the main cause of clogged pores, which will get bigger and bigger over time. Cream 1, put a little in the ordinary spoon, take the fire, until completely burned out, if there is a black residue, that is a variety of additives, the more proof of additives, and then put a cotton wick in the spoon, the cotton wick ignited, you will see that the water will be black smoke, such products are also bad. 2, moisturizing products, many are made of mineral oil, you apply them to the paper, after a while to wipe off the excess, if moisturizing then the paper will be wrinkled, if it is made of mineral oil, you will find that it is transparent! 3, you can also take the product squeezed onto the iron spoon, and then the following fire to heat, if it contains mineral oil, then the oil will come out! 4, the cream can be filled, if the filling technology is good, the texture of the finished product is meticulous, its surface will show a uniform and smooth form, there will be no large and small holes appear. Serum For liquid serum, when buying, you must pay attention to the color and shape of the serum, if you find a cloudy, precipitation or discoloration, such a serum can no longer be used. Consumers with oily, acne-prone skin must be careful when purchasing and using serums, and even if they do, they should choose a serum with anti-inflammatory and antiseptic effects to do so. Foundation Take an appropriate amount into water, and then observe its reaction. Generally there are three situations will happen: stick to the edge of the cup, floating on the water surface, sink at the bottom of the cup. A good product does not stick to the edge of the cup, does not float, and does not sink to the bottom of the cup. A good product is one that does not stick to the edge of the cup, does not float, and does not sink to the bottom of the cup. Makeup Find a silver ornaments, cosmetics or makeup smeared on it, silver ornaments become black means there is lead and mercury in cosmetics. Makeup remover The selection should first rub some oil foundation or waterproof lipstick. Mascara and other products on the back of the hand, and then pour some makeup remover wipe well, to see if it is easy and makeup products blend into one, and can be wiped off with a Kleenex. The makeup remover that has been sitting in the store for too long will look like soy flowers or salted soy milk, with lumps appearing.