Hello everyone, the hard-working Makariko is online again
Today we are going to explain the micro-environment of **. Epidermal cells form a dynamic balance under metabolism, and at the same time, the epidermal cells and their appendages are also dedicated to complex metabolic activities, forming a unique microenvironment on the surface to maintain the normal function of the body and resist the invasion of harmful stimuli and harmful microorganisms from the outside world.
The first element of the microenvironment is the pH level. Normal**The surface is weakly acidic, and the pH of the epidermis is about 55, while the dermis is close to 7. **The pH of the surface is due to the hydrolysis controlled by enzymes in the epidermis to produce some of the stronger water-soluble acids. Such a weak acid environment has a certain buffer capacity for acid and alkali, normally speaking, in addition to a high acid or alkali, when the weak acidity and weak alkalinity act on the **, after a period of time, the ** surface will return to the original acidity, which is very important to maintain the health of the **. **The pH of the surface is conducive to the growth of beneficial bacteria, and changes in pH will change the sound quality of the microflora, pathogenic bacteria and mold infections. And too strong alkalinity on the surface will also lead to dryness and cracking. **When the acidity of the surface is high, the keratin cells in the uppermost layer of the epidermis will dissolve and renew faster.
After learning the microenvironment, we can naturally think that it is more beneficial to use weakly acidic to neutral skin care products, and the cleaning products can choose weak alkaline to clean the excess secretion of healthy oily sebum, because the healthy ** has the ability to buffer, and the appropriate pH can be restored quickly after cleaning, but it is best to choose weakly acidic cleaning products for sensitive skin and dry skin, which is convenient for keeping the microenvironment on the surface stable. In recent years, the popular acid brushing beauty, originally under the operation of professionals to implement a first-class means, mainly used for acne and sebaceous gland excessive secretion and expansion, during and after the operation to strictly observe and repair, if you brush acid, be sure to choose a milder acid brushing product and lower concentration, in strict accordance with the product instructions to use.
In addition, the products with antibacterial ingredients should also be used with caution, and the beneficial bacteria, which are essential participants in the microenvironment, will be indiscriminately eliminated under the action of chemical bactericidal and bacteriostatic agents, which is not conducive to the balance of the epidermal flora. However, some plant antibacterial ingredients, such as many natural essential oils, have less impact on beneficial bacteria, if it is really necessary to eliminate the harmful bacteria on the surface, you can choose different plant essential oils to use, we will explain and recommend in the future.
Well, that's all for today's content, and the next issue is about natural aging. Time is not old beauty, it is not only about appearance, but also about a calm and beautiful attitude and temperament towards life