A glass of water can tell the quality of cosmetics

There are many cosmetics on the market, which makes girls confused. Now I will teach you how to distinguish the quality of cosmetics! Just a glass of water can It can be done. Why use water? Because we wash our face with water every day. The molecules of water are close to the molecules of the skin, so anything that can be dissolved in water can be absorbed by the skin. Put an appropriate amount of your usual foundation or lotion into water and observe the reaction. Generally, three situations will occur: sticking to the edge of the cup, floating on the water, and sinking to the bottom of the cup. These three conditions illustrate the ingredients it contains. Zhang Yingqi, director of the National Light Industry Cosmetics and Detergent Products Quality Supervision and Inspection Beijing Station, said: "Contraband substances contained in cosmetics threaten human health. Lead, mercury, and arsenic are the most common heavy metals found in cosmetics that exceed standards. According to the country's It is stipulated that the content of lead is less than or equal to 40 milligrams per kilogram, the content of mercury is less than or equal to 1 milligram per kilogram, and the content of arsenic is less than or equal to 10 milligrams per kilogram. Professionals say that although many products now have the slogan of being purely natural, they are ultimately not. It is formulated with chemicals, including some spices, preservatives, and light-protecting agents. In order to make huge profits, some businesses also put prohibited substances in it. All these harmful substances are like time bombs hidden in the body. Lead and mercury have a very good whitening effect in the short term. It is almost impossible for whitening products to be lead-free, 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 have a certain dependence on lead.

It is understood that my country has many departments such as health, industry and commerce, quality supervision, import and export commodity inspection and quarantine, but there is no shortage of markets. There are some products that do not meet the requirements. It is difficult for ordinary consumers to identify the quality of the products, and it is even impossible to get every product to the relevant unit for testing. How to use simple methods to protect yourself from the harm of inferior cosmetics? What? The following are some simple and rough testing methods for the toxicity of cosmetics. The results may not be very accurate, but at least it allows everyone to make a distinction when choosing cosmetics. Bring a PH test paper to buy facial cleanser. The human skin is weakly acidic. There is a weak acid film on the surface. If it is damaged, the skin will become fragile and cause many skin problems, causing bacteria to breed in an alkaline environment. Therefore, choosing a weak acid facial cleanser is very helpful for cleaning the skin. Is the skin product alkaline? A pH test paper can solve the problem. Apply a small amount of product to the test paper. If the test paper turns dark green after a few minutes, it indicates that the substance contains too much alkaline content.

Know the pros and cons of facial cream when exposed to fire

Facial cream is a very important part of our daily care. It provides sufficient nutrition to the skin and forms a protective film to prevent the evaporation of moisture in the skin. There are many products on the market. Zhongdu contains a small amount of mineral oil that is allowed to be added internationally. Mineral oil is a product of asphalt after refining petroleum and re-refining asphalt. Its function is to lock moisture from the surface of the skin. However, once the mineral oil exceeds the standard, the oil will become clogged. There are endless skin problems such as pores, peas, and dark spots.

There is also a good way to test the cream. Put a small amount of cream in a spoon and heat it with an alcohol lamp or candle. Products that meet the standards will burn like milk. If there is splashing, thick smoke, pungent smell, and oil residue at the bottom of the spoon after burning, it means that the mineral oil exceeds the standard or contains boron. Chemical filling.

Clear water test lotion

In autumn and summer, many people often use lotion instead of cream, but lotion often contains a small amount of oilstone ester, which is easy to clog pores and cause skin damage. If you are dry and dehydrated, your pores will gradually become larger over time. To test whether it contains whetstone ester, a glass of water will give you the result. Pour an appropriate amount of emulsion into the water. If the emulsion floats on the water, it proves that it contains whetstone ester. Shake it gently again. If the liquid turns milky white, it means that the emulsion contains an emulsifier. The emulsifier is a surfactant. They are It will destroy the tissue structure of the skin, cause skin sensitivity, and is highly carcinogenic. On the contrary, if poured into water, the lotion will sink to the bottom, proving that it does not contain whetstone ester, and consumers can use it with confidence.

How much lead can be determined by using a silver ring

Ms. Qin also introduced an extremely simple method for testing lead. Before using a cosmetic, try it on the back of your hand or the base of your ear. These two The area is the most sensitive area of ??the human body. After applying it evenly, rub the silver ring at hand (other silver products can also be substituted) on the applied area with a little force. If it appears black or has light black marks, it means it contains heavy metals such as lead. Otherwise, there is no need to worry.