When summer comes, many friends begin to screen sunscreen products again. There are more and more sun protection products in the market SPF20 Regular sunscreen, to SPF30+ Of high sun protection, and those with certain sun protection value BB How to choose the best one for yourself? Today, let's share it from the component index analysis.

I once listed a list of commonly used sunscreen ingredients on my microblog, and today I will show it again:

The commonly used physical sunscreen ingredients are titanium dioxide and zinc oxide. Most of them are chemical sunscreen ingredients, and the physical sunscreen ingredients are only compounded. But there are too many kinds of chemical sunscreen ingredients, and many sunscreen agents are not only UVB It has protection ability and can also protect UVA 。 In addition, some sunscreen agents have weak effects when used alone, but if they are properly mixed with other sunscreen agents, they will have great combat effectiveness. Therefore, sunscreen formula is a classic combination of ingredients. High index is not achieved by simply increasing the amount of sunscreen, which can only bring high irritation.

Since ordinary consumers can't recognize the contribution of different types of sunscreen ingredients to their sunscreen value, we can use another method to make a simple analysis. Sun protection products usually add some grease, such as“ C12-15 Benzoate, Isononyl Isononoate, etc. The amount of these greases is usually 3-5% Compared with our sunscreen list, if the sunscreen ingredients appear behind these oils, the overall sunscreen power will be weak, and the sunscreen index is difficult to exceed SPF20 。 In addition, there are also some polyol components, such as "butanediol, propylene glycol, glycerin", and their addition amount is generally 3-5% , can also be used as an auxiliary judgment basis.

But when shopping, we should not only focus on the protection of sun protection index. A qualified sunscreen should ensure the sunscreen ability while minimizing the irritation of the product. In addition to the selection of sunscreen type and the amount of sunscreen added, the level of irritation is also related to other ingredients added in the product. If some anti allergic and soothing ingredients are added, such as chamomile, licorice and other extracts, the overall irritation can be reduced in another way. Of course, the premise is that these anti allergic ingredients should be added in sufficient amount, but only a few ten thousandths of them can not be added as a concept.

From my personal analysis five 、 six The combination of two sunscreen ingredients is the safest, so if two sunscreen ingredients appear in the ingredient list of any product at the same time, the safety of this product should be good, and you can pay more attention to it.

Finally, it is necessary for sunscreen products to protect against the sun, but if they can achieve additional skin care effects at the same time, it is icing on the cake. At the very least, if the sunscreen can prevent, moisturize, close pores, balance oil and water secretion, etc. at the same time, it is more worthwhile to start with such full effect sunscreen. However, there are few such varieties, which need deep excavation.

Basically, that's all for sunscreen products. It should be noted that many isolation products, such as isolation cream bb Cream and so on, although they have sunscreen ability, they are usually weak, and these products with cosmetic ability have a greater chance of blocking pores, so it is better to use less. As for the concept of isolation, cosmetics are only limited to UV isolation, and have nothing to do with computer isolation. When shopping, only choose white sunscreen, and avoid colored ones.