In dry winter, most beauties focus on moisturizing, ignoring the need for skin whitening. Do you think that you will get tanned in summer and return to white in winter? Winter long clothes and trousers do help block ultraviolet rays, but whitening is a required course that must be taken year-round! The sisters hope to show themselves as “Snow White” in summer, so they will repair the skin “kissed by the sun” in summer from autumn and winter.
Recently, major brands in the market have launched whitening products one after another, in order to catch up with the season change, which is a good time to repair skin. In addition to proper repair and timely replenishment of moisture, it will be more effective to strengthen whitening and repair according to your own skin condition.
Love whitening, first understand melanin
Can you understand melanin, the chief culprit hindering whitening? It is the so-called “know yourself and know your opponent” that you can win all battles. Many whitening and skin care products start from resisting the production of melanin. We all hope to have white and transparent delicate skin. We might as well start with understanding melanin.
The color of skin is determined by complex chemical reactions that occur in the epidermis. Parallel to the basal layer and sandwiched between keratinocytes (mother cells), there are some cells that specifically synthesize melanin, which we call melanocytes.
Production of melanocytes
There are many reasons for them. Oxygen will oxidize with tyrosinase of human body and become toxic free radicals. Free radicals stimulate the secretion of melanin. Pollution, radiation, waste gas and dust in the city, as well as toxins and garbage not discharged from the body, will intensify this oxidation process, making the skin dark and opaque. Or when the skin is stimulated by the outside world, it will produce slight inflammation. For self-defense and protection, the cells will produce an enoic acid substance, which will activate tyrosinase to a certain extent and also promote the production of melanin. For example, after having acne and acne inflammation disappear, there is a dark mark left. This is the self-protection function of the skin, which will produce melanin to protect the damaged skin.
Formation of color spots
Fortunately, in the metabolic cycle of epidermal cells, melanin particles are transported to the surface of the skin (that is, the stratum corneum), where they are removed together with the exfoliation process of dead keratinocytes. However, excessive melanin is produced per unit area to form color spots. Usually, when the melanin is concentrated in the places, including the cheeks and forehead, is stimulated by ultraviolet rays or other external stimuli, the melanocytes will get signals to double the production of melanin, forming color spots that are difficult to fade.
New favorite keywords to resist melanin
Key words: ellagic acid
Defense method: cut off the source of melanin
Ellagic acid, extracted from Tara tree in South America, is a natural plant essence, which directly attacks melanin and effectively whitens skin. Ellagic acid can regulate and inhibit the formation of melanoblasts at the source, reduce the formation of color spots, and has a high-efficiency antioxidant effect, effectively combat free radicals, so as to inhibit the oxidation of the formed melanin, limit the melanization of pigment and reduce the color spots. The three-dimensional anti melanin factor ellagicacid often mentioned in skin care products refers to it, which usually has a dual whitening effect: inhibiting and inhibiting the production of melanin and resisting the lightening effect of melanin deepening.
Key words: hesperidin
Defense method: gently remove black
Hesperidin is a multifunctional whitening factor that can inhibit tyrosinase activation, promote skin microcirculation and protect collagen. Hesperidin, a herbal active introduction factor, is like a gentle hand, which effectively and gently removes melanin precipitated in our skin.
Key words: arbutin
Resistance method: suppression, convergence and elimination of “black”
The name of arbutin comes from the fact that it is extracted from a leaf called arbutin leaf. Arbutin can also be found in some fruits and other plants, such as Western pears, small pears and “Saxifraga”.
Arbutin can be divided into: α and β Type A and type B both have the effect of inhibiting tyramine enzymes to achieve whitening, however β Type A is more controversial. It is said that it will enter the stratum corneum cells after application and decompose a small amount of hydroquinone; And ursulin α The C-type component is relatively stable, does not decompose hydroquinone, is mild and non irritating, and as long as it is added β 1 / 9 concentration of tyramine can inhibit the production of tyramine and achieve whitening effect. It is often added to whitening products.