How to use the steps of the Xianzhushe Golden Bright Whitening and Freckle Removal Kit

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Whitening** or other whitening products, especially those that are particularly noticeable, are likely to contain fluorescent brighteners.

Fluorescent brightener is a fluorescent dye and a complex organic compound whose characteristic is that it can produce blue fluorescence, which can make the substance visible to the naked eye very white.

Take ** as an example, test whether ** contains fluorescent brightener, open the package of **, and then put it under the "ZF-C three-purpose ultraviolet analyzer", use ultraviolet light to irradiate** to see if it will emit bright blue light, if so, it means that ** contains fluorescent agent. If you don't have an ultraviolet analyzer, you can use an ultraviolet flashlight, an ultraviolet money detector pen, etc.

Fluorescent-containing ** shows a very large area of bright blue when irradiated with ultraviolet light. If you come into contact with the liquid slightly, it will adhere to the fluorescent agent, and if you take it, you will also have fluorescence. After rinsing your hands with water three times, the fluorescent agent on your hands still emits a strong bright blue light under ultraviolet light, and it is almost not washed off.

Switch to hand sanitizer 3 times, and after irradiation, your hands also emit blue light, but the effect is slightly better than that of clean water. Washing with a facial cleanser is almost as effective as a hand sanitizer, but it does not completely remove the fluorescent light that remains on your hands.

Harm of fluorescent agents to the human body:

Fluorescent agents are not as easy to be decomposed as general chemical components, but accumulate in the human body, producing many harmful effects and greatly reducing human immunity; Fluorescents bind to proteins outside the wound and can also hinder wound healing; Fluorescent agents can cause human cells to have a tendency to mutate, and their toxicity accumulates in the liver or other important **, which can become a potential carcinogenic factor. Cause damage to the blood system: chemical substances are easy to pollute human blood, although blood has a certain self-purification ability, trace amounts of harmful substances into it, will be diluted, decomposed, adsorbed and discharged, but long-term, a large number of toxic substances poured into, will cause qualitative changes; When it enters the blood circulation, it will damage the cell membrane of red blood cells, causing hemolysis.

How to distinguish the real from the fake**, the first way is to scratch a few times with a needle, there are scratches that are true, the second way is to bake them with a lighter, real gold is not afraid of fire, it is true that it does not change color, and the third method is to fall on the table, and the sound is relatively dull.

1. Visual inspection.

1. Check the official logo of **. It is generally engraved with 999 or 990, or 10k, 18k, 22k, 24k. Less than 10k is not considered because the content of ** is too low. If you look with a magnifying glass, you'll look more closely.

2. There will be no obvious official purity mark on the ancient ** jewelry.

3. Of course, counterfeit ** jewelry will also have official logos, so further inspection is required.

4. Look for obvious discoloration. Inspect the wear areas on the surface, usually at the edges of the product, and check for discoloration there, if the color fades away and changes to another color, then the product is just gold-plating.

2. Bromine chemical test.

1. Put the ** product into the alcohol solution and shake it for a while.

2. Soak a piece of filter paper in the alcohol solution.

3. At this time, the filter paper turns gray-purple.

4. Drop 4 drops of bromo-A reagent to the filter paper, if the filter paper turns white, then this ** product is real gold.

The entire test takes 20 minutes.

3. Magnet test.

It's a simple test, but it's not a sufficient proof of whether it's real gold or not. You can find a strong magnet to do the test.

**Not a magnetic-containing metal, if your product is attracted to a magnet, that's enough proof that this product is not**. But just because your product doesn't react to magnets doesn't mean it is, because there are many more non-magnetic metals.

Fourth, the density test only a very small number of metal density more than **. Pure 24k** has a density of about gram milliliters, which is much higher than other metals. The density test method is enough to prove that your product is the best.

The higher the density, the higher the purity. Please make sure that there are no gemstones attached to your product.

1. If you don't have the equipment for this, the jewelry store can usually do a density test for you.

2. You can put your ** product into a container full of water, and then test the volume of the spilled water, and then divide it by the weight of the product you weigh, which is the density of your ** product. Keep in mind that there are different proportions of grams to milliliters for different purities: 14k grams of milliliters 18k** - to grams of milliliters 18k platinum - grams of milliliters 22k - to grams of milliliters.

5. Bite test.

Everyone has seen the movie where miners bite gold to test it. I also saw how simple it was to bite the "**" medal when an Olympian won a gold medal.

1. Take a gentle bite.

2. Check your bite marks, if the bite marks are deeper, the higher the purity of **.

Actually, this is not a recommended test, which can damage your teeth. What's more, it will give ** lead plating, which is softer.

6. Ceramic scratch test method.

1. Use unglazed ceramics. If you don't have this, you can buy it from a ceramic store.

2. Use ceramic to scratch your **product, if it is a black scratch, it means that your product is not**, if it is a golden scratch, it proves that your product is**.