What's the material of mica?

Let’s start with everyone’s skin. Healthy skin must have a texture (shine):

A healthy skin must have a certain radiance.

For Asian women, to be white, of course, they must have a moderate gloss: if the face is too glossy, the skin will look dry and lack nutrition; but too little gloss will look Excessive oily feel, and radiant skin is more likely to appear on dull skin.

In skin care products, how to make the face glossy? One is to add some vegetable oils, but it is very likely to harm the skin, and the product feels greasy after application. Another is to add biotite to skin care products and makeup products.

Why biotite can have gloss, let's talk about it briefly:

First, the massive structure of biotite: Biotite is a rock-forming mineral, and biotite used in skin care products generally has a porphyritic structure, as shown in the figure below. The block-shaped structure, if you can cover a layer on the surface of the skin with uneven pits, so that the light source can produce a total reflection, instead of diffuse reflection light without a fixed position, so that the total reflection light source can shine very brightly. possible.

The second is that the light source directly on the biotite has a high reflective surface, and the small transmission coefficient makes it difficult for the light source to pass through the biotite (not easy to be like laminated glass), but only develop a reflective surface on the surface of the biotite.

2 characteristics of biotite above comprehensive:

The definition of Shine itself is a contrast ratio between total reflection and diffuse reflection. If all the light sources pass through the raw material, or all of them have experienced diffuse reflection, there will be no total reflection and glossiness.

On the one hand, the characteristics and structure of biotite can produce a reflective surface instead of scattering. the mirrors produced by the face), so that the biotite can produce a good smoothness.

Biotite is generally used as a pearlescent agent in the daily chemical industry to enhance the gloss of the product, or to remove yellowing and whitening on the surface of the skin, so that the skin has a stronger smoothness.

Some Q&A about biotite

1. Is biotite safe?

Answer: Biotite is a mineral ingredient, with no toxic side effects and no irritation, but it is likely to contain some heavy metals exceeding the standard, but the raw materials used in makeup will appear heavy metal exceeding the index value, and there are also heavy metals in the latter products. Exceeding the standard index value (ppm level), there is no need to excessively disturb heavy metals exceeding the standard in reliable products.

2. There are skin care products that feel shiny after applying them. Do you add too much?

A: Some skin-whitening, yellowing and whitening products often add a lot of biotite. In order to quickly obtain the actual effect of brightening (this is also glossy and whitening skin), it is likely that the addition is relatively large. But pay attention to your own operation methods and standards, or it is related to your natural environment. For example, the smoothness is mainly obvious under the dark blue light source, while the gloss is mainly insignificant under the bright red light source. Therefore, it is impossible to see the glittering problems in the daytime, but at night it is very likely that the glittering level will increase in some rooms under the light source.

3. Biotite only has the actual effect of brightening in time. Isn't it stronger to not use biotite in the product?

A: The actual effect of timely brightening is also the actual effect, and all the makeup products are the actual effect in time. And customers' requirements for skin care products are getting higher and higher. It is stipulated that the actual effect of brightening can be obtained in time. In addition, biotite also happens to consider customer requirements.