The ingredients of the mask penetrate into the first layers of the skin

The ingredients can penetrate into the first layer of the ingredients are actually related to many factors such as the ingredients, the method of use, and the type. In general, ingredients can penetrate into the superficial layer, stratum corneum, and to a certain extent reach the deep dermis.

**The main function is to provide nutrients and moisturizers, and help improve skin problems. The active ingredient in the stratum corneum can act quickly on the stratum corneum by direct contact with the surface. These ingredients can penetrate into the stratum corneum in the form of molecules or tiny particles to provide the skin with the moisture and nutrients it needs.

Some special types**, such as hyaluronic acid**, collagen**, etc., have ingredients that have better penetrating properties and can penetrate further into the dermis. The dermis is the sub-bottom tissue of the city, which contains important components such as collagen and elastic fibers, which play an important role in elasticity and firmness. Some of the special ingredients can penetrate into the dermis to nourish and repair the skin at a deeper level.

To be clear, ingredients can only achieve deeper penetration under certain conditions. For example, make sure to clean before use, remove grease and dirt; It is also necessary to choose the right products for your skin type and needs; And use ** correctly according to the instructions, so that it is in full contact with **.

Everyone's absorption capacity is also different, so the ingredients may vary for different groups of people, and may show better penetration in some people. Therefore, the question of "the exact layer into which the ingredient can penetrate" is difficult because it involves a combination of factors.

Ingredients can penetrate the stratum corneum to some extent and sometimes further into the dermis. For each person, factors such as the right choice, the correct way to use it, and individual differences will affect the penetration depth of the ingredient in the ingredient. Therefore, when choosing and using**, you should make an informed choice based on your own needs and skin condition.

The outermost stratum corneum.

It is very dense, with about 25 layers of keratinized cells tightly arranged, so it is difficult for the ingredients of ** to completely penetrate into the stratum corneum. Not to mention reaching other layers. The amount of active ingredients in cosmetics that penetrate the skin is very small. Transdermal absorption is a university question.

The ingredients can usually penetrate into the first layer, the stratum corneum. After applying, the essence will penetrate into different levels, in which the essence ingredients will enter the stratum corneum, which is the outermost layer.

a.Basal layer.

b.Cuticle.

Correct answer: B

**It is a carrier of beauty care products, applied to the face for 15 30 minutes, when the nutrients of the skin care products are slowly absorbed, that is, the film is removed, the material of the powder is not reconciled, kaolin, non-woven fabrics, and silk**, at present, the highest technology, the carrier is meticulous, and it is easy to be sucked by the silk**, and the general active ingredients are about it. The principle is to use the short time covered on the face to temporarily isolate the air and pollution from the outside world, increase the skin temperature, expand the pores, promote the secretion and metabolism of sweat glands, increase the oxygen content of the skin, and help the skin to eliminate the products of epidermal cell metabolism and the accumulated oils, and the water in the skin penetrates into the stratum corneum of the epidermis, becoming soft, and the skin is naturally bright and elastic. It is generally believed that when the surface of the spike is covered, the air is isolated, the cuticle is softened, and the infiltration of the slag components in the ** is promoted; After a period of infiltration, keratinocytes swell and are arranged relatively neatly, which can make ** look bright and soft in a short time; **During the drying process, it can be tightened**, and the loose ** can be lifted in a short time**; Through the adsorption of porous substances, it also plays a role in removing excess oil and old keratin during the adhesive film sticking process.