1, the composition of different substances. Sunscreen is through inorganic or organic active ingredients play a role in sun protection. Many sunscreens simultaneously protect the skin from two kinds of ultraviolet rays (UVA, UVB). From another point of view, it works through two mechanisms of reflection and absorption of light, i.e., the principle of sunscreen is both physical and chemical sunscreen.

2, the role of different. Generally inorganic is the role of reflection, organic is the role of absorption. Sunscreen only sunscreen function, and isolation cream in addition to sunscreen function, the ingredients will also add antioxidant ingredients, whitening ingredients or vitamin ingredients.

The biggest credit of the isolation cream is to resist the damage brought by ultraviolet rays to the skin, but at the same time, it can also isolate the dirty air and dirt to reduce the damage of free radicals to the skin. If the office family, just commuting to and from work on the way to meet the sun, you can just wipe some isolation cream; if it is to go out to play or to the beach to enjoy the "sunshine dinner", be sure to use sunscreen.

3, the use of different steps. In order for the moisturizing milk, sunscreen, isolation cream, foundation. Isolation is the last step of basic skin care, but also the first step of makeup, its role can not be underestimated, so be sure to use isolation, otherwise like foundation, powder, loose powder, blush and so on is very easy to block the pores, the day will seriously affect the state of the skin.

Expanded

The correct use of sunscreen should pay attention to must be wiped before going out 20 minutes before the first wipe, before going out and then replenished once, the effect is good; each time at least 1-2 ml of the amount, in order to achieve the best isolation effect; should be avoided in the sunshine the most intense when going out ( 10 a.m. to 2 p.m.);

Good use of a variety of aids such as umbrellas, hats, long-sleeved clothes, sunglasses and other resistance to ultraviolet invasion; in the weak sunlight, exposure to the sun for a short period of time, the first to clean the skin, use lotion, if it is dry skin, the appropriate smear a little bit of moisturizing lotion, wipe the SPF15 or so of the sunscreen; sunlight is fierce, exposure to the sun for a long period of time.