1, acidic skin care ingredient
tartaric acid
Fruit acid is actually the common name of glycolic acid, which is named after it is mostly contained in apples, lemons and other plants. Fruit acid can be used in general skin care products, enhanced skin care products or medical beauty fields according to different molecular structures or concentrations.
The most common function of fruit acid is exfoliation. Its principle is to reduce the adhesion between cells with the help of the dissolution characteristics of fruit acid, so that the old waste keratinocytes attached to the skin surface are easy to loosen, and at the same time clean the thickened and hardened keratin deposited around pores and acne, which is helpful to integrate skin and accelerate the smooth discharge of sebum from acne skin.
In addition, a higher concentration of fruit acid can help collagen proliferation and make the fiber network at the bottom of the skin more closely arranged, so it is more suitable for aging skin, which is what we usually call "fruit acid skin rejuvenation".
salicylic acid
The principle of salicylic acid used for exfoliation is similar to that of fruit acid. By dissolving the cement between keratin, the old waste keratin will fall off. Some improved salicylic acid or its derivatives, such as octanoyl salicylic acid, will be added to some whitening products, which can effectively improve the skin permeability and make it easier for effective ingredients to directly attack the root cause of whitening problems.
It is also an acidic substance with exfoliating effect, but the biggest difference between salicylic acid and fruit acid is that salicylic acid is oil-soluble and fruit acid is water-soluble, so salicylic acid is more effective in improving acne, fatty granules and blackheads caused by sebum blockage. In addition, high concentration salicylic acid therapy can also achieve anti-aging effect comparable to "fruit acid rejuvenation".
mandelic acid
Almond acid can help to treat severe acne on the premise of dissolving sebum and limiting the function of sebaceous glands. At the same time, due to the antibacterial properties of almond acid, it can kill anaerobic bacteria that may cause acne in the skin, such as propionibacterium acne.
Compared with the characteristics of anti-acne and oil control, almond acid has a better whitening effect. It can directly inhibit the two major factors that lead to melanin deposition, namely complex acid and complex enzyme, and block the inducement that may lead to dull skin spots from the root.
All-trans A acid
All-trans -A acid is the terminal derivative of retinol (vitamin A), which is the most widely used of all acids and can help skin fight acne, spots, aging and skin texture problems. However, the use of A acid must be carried out under the guidance of a doctor, and at the same time, we must pay attention to strengthening the supply of intercellular substance, strengthening moisturizing, and using mild and high-power sunscreen products.
tranexamic acid
Tranexamic acid, also known as tranexamic acid and thrombotic acid, is a very common ingredient in Japanese skin care products. Tranexamic acid has two main functions, namely, improving stubborn pigmentation and improving skin quality. Tranexamic acid can penetrate deep into the skin, target and lock cells with slight inflammation, and improve the form and quantity of melanin by inhibiting inflammation, thus helping to fade spots. Tranexamic acid also has the property of preventing protein from decomposing, so it can stabilize the skin state, resist sensitivity and strengthen the skin, and can be used as an auxiliary ingredient in other skin care products.
2, the correct method of hydration
1, dilute the settling density and reduce the existence of impurities.
Skin dullness is mainly due to insufficient metabolism, which leads to lack of water in cells and immobile blood circulation, so the density of impurities will become higher, impurities will exist for a long time, and dullness will appear on the face. So how to solve this situation?
Experts believe that massage every morning and evening is the most basic. It can usually be aimed at strengthening acupoints. Pressing is the driving force for the blood to rush forward, which urges the things in the pipeline to rush forward and drives away the dark and turbid tone with red.
Grouting point: the depression directly below the mouth. It can improve dry spots and promote circular metabolism.
Also, you need to drink water in stages to avoid wasting time. In order to make the water fully absorbed, it is necessary to drink it in small sips and several times to ensure that the water can be sent everywhere. If you irrigate too much water at a time, the kidney will receive the message of excessive water intake, thus speeding up urination. The best rhythm is half an hour and a half glass of water.
2. Purify impurities first, so that the skin won't fog.
Medical whitening is the most effective method, but after a long time, the tissue will relax, the skin will be tired, and the effect will be greatly reduced. Therefore, it is better to be diligent at ordinary times, insist on maintaining the level in the morning and evening, and intercept and cut off the transmission of pigment before melanin appears, which will be better than time to remedy. You can use whitening essence to force the brightness of your whole face.
3. Keep light transmittance and lock water with cream.
At the end of maintenance, using cream to lock moisture, form a smooth protective film, and lock the maintenance ingredients at the muscle bottom can improve rough skin and messy keratin, but it has not avoided the trouble of drying most whitening products.
Suggestion: Use a light cream or lotion in the morning, which will make your face greasy. Use a moisturizing cream at night, and the keratin gap still needs oil. Supplementing nutrition at night will make your skin look better the next morning.