Human skin contains four pigments: brown melanin, red hemoglobin, blue hemoglobin, and yellow carotene. Among them, the content of melanin determines the depth of skin color. Only by understanding the basics of skin care can you take better care of your skin and no longer be afraid of going without makeup! When I went to bookstores in the past, I would accidentally or intentionally see many so-called seven-day beauty methods of industry masters, and beauty gurus teaching you skin care, etc. Every time I opened them, I smelled of RMB. Skin care is similar to eating, you have to do it every day. You can't completely transform yourself by doing it for a few days. Then a bunch of famous fashion blogs will update their Weibo every day, recommending a very useful lotion, water, cream, makeup remover oil, etc. If you watch TV, all the stars are touching their faces in ecstasy in front of you: "xxxx, ultimate hydration for your skin", "xxxBB cream makes you incredibly white". Today we will throw away these pseudo-concepts and talk about the basics of skin scientifically. 1. Skin problems are big problems The skin is actually the largest organ in the human body, so this issue is a very complicated one. Human skin contains four pigments: brown melanin, red hemoglobin, blue hemoglobin, and yellow carotene. Among them, the content of melanin determines the depth of skin color. The epidermis of the skin is divided into 5 layers: stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum basale. The outermost layer is the stratum corneum. When its water content is too low, the skin tone will appear dull. When the blood circulation in the dermis of the skin is poor, the hemoglobin in it will coagulate, making the skin tone dull. In ancient times, describing a person as "withered" meant that the person was as haggard as a withered plant, and in the initial stage, the person's complexion was dull. The tension and toughness of the skin come from the collagen fibers in the dermis. If they are missing, the skin will become dry. 2. Understand the skin structure to better care for your skin The skin is divided into three layers, from outside to inside, namely the epidermis (divided into 5 layers: stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, stratum basale), dermis (divided into 2 layers: papillary layer, stratum reticularis), and subcutaneous tissue. Basal layer Deep in the epidermis, there is only one layer of cells that can divide and then evolve. It takes 18-19 days for one cell to divide into two cells. For example, if your epidermis is damaged, the cells in the basal layer will grow and repair. This layer also contains our melanocytes. In fact, both black people and white people have melanocytes, but the melanin granules of black people are large, while the melanin granules of white people are small. But you can find that the basal layer is very low, so those skin care products that claim to reach the basal layer directly are questionable whether they can actually reach the basal layer. There is a spinous layer (stratum spinosum) It can continuously produce new cells, thus moving upward layer by layer, and has the ability of cell division and proliferation. To provide nutrition to cells. Granular layer Its main function is to prevent the invasion of foreign matter, filter ultraviolet rays, and gradually evolve into the stratum corneum, which contains keratin particles. Transparent layer Control skin moisture and prevent water loss. This layer is usually found on the palms of the hands and soles of the feet. It looks like it has no color and is transparent. Stratum corneum This layer is the outermost layer of the epidermis and is mainly composed of keratin and keratinized fat and nerves. What we are most familiar with about this layer is its metabolism, because there will be "dead skin". Generally, most of our skin care products work on the stratum corneum because it has strong water absorption capacity and better moisturizing effect. Therefore, our skin care efforts have basically been focused on the stratum corneum. |
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