What are the methods for testing cosmetics for lead and mercury?

1. Go to a special inspection agency for testing.

2. When buying lipstick, apply the lipstick to the back of your hand and use silver jewelry.

Rub the product back and forth on it, while rubbing while observing the change of lipstick color, the lipstick turns black indicates that the lipstick contains lead, the darker the color, the greater the lead content.

3. Take out some cosmetics and smear them on white paper, wait for a period of time, wait for it to penetrate on the paper, and then use coins or harder metal products to scratch back and forth on the paper. If it turns black, it means that it contains lead, and the darker the color, the higher the lead content.

4. Prepare a transparent water cup, pour some water, take out some cosmetics and place them in the cup. If there is sediment at the bottom of the cup, it indicates that the cosmetic product contains lead and mercury; If there are floating objects on the water, it indicates that the cosmetic species contains minerals; If it sticks to the rim of the cup, it contains animal oil; It is best to be able to completely melt in water.

5. Take out some cosmetics and apply them on white paper, or on a thin plastic film, and place them in the sun.

6. If the silver jewelry becomes black, there is lead and mercury in the cosmetics. This method is suitable for basic care and make-up.

Methods for testing cosmetics for mercury lead.

Clear water, gold and silver jewelry.

Step Method.

It is more reassuring to go to the inspection agency designated by the Ministry of Health for testing.

Apply makeup to the back of your hand, slide it on your hand with pure gold jewelry, and if it appears black, it means that it contains lead and mercury.

Take some cosmetics and apply them to silver jewelry, and the silver jewelry turns black, indicating that there is lead and mercury in the cosmetics.

Take some cosmetics and put them in a cup of water, if there is sediment at the bottom of the cup, it means that it contains lead, mercury, etc.

Apply some lipstick to the back of your hand and rub it back and forth with gold jewelry, at which point the lipstick turns black to indicate that it contains lead mercury.

Precautions. Our common silver jewelry will undergo oxidation reaction and turn black after a long time, which is not related to whether the cosmetics contain lead.

The above is about the detection of lead mercury in cosmetics.

Summary. Hello, dear, the test method for lead mercury in cosmetics is as follows: 1. Take a silver jewelry, ring, bracelet, dip a little skin care product to be tested, and then rub it on a piece of white paper.

If the friction marks turn black, it means that it contains lead and mercury. 2. Apply cosmetics to the back of your hand, take advantage of the fact that it is not absorbed, rub it back and forth with a silver ring on the painted part, and you can see the effect in about a dozen times, the more black it is, the more lead and mercury it contains. 3. Take some cosmetics and drop them in clean water, if it sinks to the bottom of the water, it contains heavy metals such as lead and mercury, and if it floats on the surface of the water, it means that it contains animal oil, which is not good for breathing.

Hello, dear, the test method for lead mercury in cosmetics is as follows: 1. Take a silver jewelry, ring, bracelet, dip a little skin care product to be tested, and then rub it on a piece of white paper. If the friction marks turn black, it means that it contains lead and mercury.

2. Apply cosmetics to the back of your hand, take advantage of the fact that it is not absorbed, rub it back and forth with a silver ring on the painted part, and you can see the effect in about a dozen times, the more black it is, the more lead and mercury it contains. 3. Take some cosmetics and drop them in clean water, if it sinks to the bottom of the water, it contains heavy metals such as lead and mercury, and if it floats on the surface of the water, it means that it contains animal oil, which is not good for breathing.

How to choose cosmetics: 1. Choose a good cosmetics brand, generally speaking, the quality of famous brand cosmetics is guaranteed, because such manufacturers have good equipment, high standards, trustworthy product quality, and are safe to use. When purchasing, be sure to pay attention to the date of manufacture of the product.

In general, creams, honeys, and creams have a shelf life of three years when unopened. But after opening, the actual shelf life is only one year. 2. It will identify the quality of cosmetics, one is to observe from the appearance, the second is to distinguish from the smell, and the third is to judge from the feeling.

3. Choose according to your own type, such as oily skin care products, dry skin care products, moisturizing skin care products, etc.

The ** I took to you is my son's facial cleanser, can it still be used?

Can it still be used if it is black when it is ground out on paper?

Why can't I send it.

Hello, dear, due to system maintenance can not be sent temporarily**, this can only be described to you in the form of text, please forgive me!

Can it still be used. Dear, it is recommended not to use it, if it is uncomfortable to use.

Is it black or mercury?

I'm not sure, I can't see ** here.

The test method is as follows:

Raw materials and tools: lead and mercury special extract, extraction straws, graduated test tubes, cosmetics, lead test strips, mercury test strips.

1. Take 1ml of the cosmetics to be tested and put it in the sample test tube and keep it for later use.

2. Pour the special extract containing 2ml of lead and mercury into the test tube, shake it well, and mix them thoroughly.

3. Use a test tube to take an appropriate amount of the liquid that has just been mixed and shaken, and drop it on the lead test paper and mercury test paper respectively.

4. After dropping, wait for a moment and quietly observe the color change of the test strip.

5. Through the color on the test strip, you can detect whether the cosmetics contain lead and mercury.

1. Take the cosmetics to a professional health testing institution for testing, which is the safest and most reliable identification method.

2. Apply some cosmetics to the back of your hand, and then slide it on your hand with pure gold jewelry.

3. Take a small part of cosmetics and apply it to silver jewelry, and the silver jewelry turns black to indicate that there is lead and mercury in this cosmetics.

4. Take some cosmetics and put them in a glass of water, if there is sediment at the bottom of the cup, it means that the cosmetics contain lead and mercury.

5. Apply lipstick to the back of your hand and rub it back and forth with gold jewelry, if the lipstick turns black, it means that it contains lead and mercury.