In Fan Ge's view, it is unnecessary. As long as there are good ways to restore whiteness, it is not difficult. Now talk about stains!
Types of stains
spot
Freckle can also be called "genetic spot" because it can generally find family history. It can appear in school age, and often appears as light brown or dark brown punctate pigmentation spots, round, oval or irregular, with clear boundaries, smooth surface, isolation but not fusion, and different densities.
Clinically, external preparations can play a role in desalination to a certain extent, but the effect is not good. Clinically, freckles are mostly treated by photoelectric medical beauty means, supplemented by hydrating and moisturizing, which can achieve a good effect on freckles.
chloasma
Chloasma is different from pigmentation, and its mechanism is relatively complicated. Besides melanin, it is also related to the damage of skin barrier. Sun exposure will aggravate, estrogen level fluctuation will aggravate, and even quarrel with people will be aggravated.
Its treatment is also very different from pigmentation. Generally, unstable chloasma cannot be treated by laser. If you are not careful, you will become a "cat face" in a second, and it is even more difficult to prevent anti-black.
But for chloasma, topical preparation containing whitening ingredients is a good choice, which is not only effective, but also safer and more convenient than laser treatment.
Whitening ingredients
nicotine
Nicotinamide can down-regulate the transport of melanosome from melanocytes to keratinocytes, interfere with the cellular signal channels between keratinocytes and melanocytes, and reduce the production of melanin. In addition, nicotinamide can also act on melanin that has been produced, reducing its transfer to surface cells.
When nicotinamide is used as whitening component, the concentration of nicotinamide is 2%~5%, which has certain effect on treating chloasma and pigmentation caused by ultraviolet rays.
tranexamic acid
Tranexamic acid essence reduces the production of melanin by inhibiting the activity of arginase; Decrease the activity of PAR2 receptor on keratinocyte membrane and block the combination of melanin and keratinocytes. Inhibit the catalytic effect of protease on peptide bond hydrolysis, prevent the activity of inflammatory protease, and block the melanin generation pathway formed by ultraviolet radiation.
arbutin
We all know that hydroquinone has a good effect on chloasma. Arbutin is a derivative of hydroquinone, a melanin bomb killer, which has a powerful effect similar to hydroquinone while reducing toxicity.
It inhibits the production of melanin by inhibiting the activity of tyrosinase, cuts off melanin from the source and destroys the enemy's nest. Compared with other ingredients, it has a more radical effect. Therefore, the whitening effect is more stable, and it is applicable to a wider range of people.
The method of fading spots is definitely different. In addition to the three examples mentioned above, there are other different ingredients to choose from. For example:
Different ingredients will have some added value, for example, azelaic acid can improve red and black tiktok; Salicylic acid can make acne shut up; Nicotinamide can lock water and moisturize. ...
Therefore, in the choice of ingredients, we need to choose according to the specific situation and specific needs, but there are some absolute principles that cannot be violated.
1. Choose mild cleaning products and don't rub the spots hard;
2. Insist on using skin care products containing whitening ingredients, fishing for three days and drying the net for two days;
3. Strict sun protection;
4. It can be treated by appropriate medical and cosmetic means.
Fan Ge concluded: In short, freckle removal is a big project that needs long-term persistence. Even if it is cured, it will not be done once and for all. If you are not careful, the spots may appear again.