Sunscreen application precautions

It has started to step into the peak of exposure, so early summer is also the perfect time to pick a new sunscreen for ourselves. Which is the best sunscreen with the best reputation? What brand of sunscreen is good? It is also natural to become the concern of MM, the following first remind MM in the selection of products at the same time must pay attention to the use of sunscreen considerations Oh.

Sunscreen smear several times

For people who sweat a lot, especially those who are often outdoors, is not in the application of sunscreen to pay attention to the application of more times? The more you sweat, the more diligent you should be in reapplying. If the sunscreen runs away with the sweat or wipe off, and then do not timely replenish the wipe, is not equal to not apply sunscreen?

How much SPF sunscreen to use

How much SPF should I use in different weather? Normally: SPF15, PA+ or less is enough. Outing: SPF15 to 30, PA++ is perfectly fine. Swimming: SPF30, PA+++, and the sunscreen must be waterproof. Of course this is not absolute. Especially in this year, this boundary is broken. This year's sunscreen is characterized by "high multiples but still light and not greasy, although light but has a very good sunscreen effect". What is the reason for the aggravation of sweat hair Every summer after using sunscreen products will feel the aggravation of sweat hair phenomenon, I hope to know this, is there hormone or what chemical things? If you feel that every year sweat hair is aggravated indeed should be paid attention to, but not necessarily the cause of sunscreen, but must remember that any time you use skin care products should choose brand-name products, brand-name does not mean expensive, but a symbol of quality, is a guarantee of skin safety.

The higher the SPF value represents what

The higher the SPF value of the sunscreen product, the stronger the sun resistance, or the longer the sun protection time? SPF blocks UVB rays, generally speaking SPF15 can block 93.3% of UVB rays, while SPF30 can block about 96.6% of UVB rays; the difference between SPF 15 and 30 is double, while the ability to block UVB rays is only 0.3%, which is very limited; and for PA, generally PA+ has an effective protection time of 4 hours, PA + + effective protection time of 8 hours, but if often sweat, even PA + + +, still need to replenish the rub.

The difference between isolation cream and sunscreen

What is the difference between isolation cream and sunscreen? Which is the best sunscreen with the best reputation? What is the best brand of sunscreen? What are the precautions for using sunscreen? Sunscreen has only sun protection function, while isolation cream has sun protection function, and the ingredients will add antioxidant ingredients, whitening ingredients or vitamin ingredients. The greatest merit of barrier cream is to ward off the damage brought by UV rays to the skin, but it also isolates the dirty air and dirt to reduce the damage caused by free radicals to the skin. If you are an office worker, just the way to and from work with the sun, just rub some isolation cream, and there is no need to apply a layer of sunscreen; if you are out to play or to the beach to enjoy a "sunny meal", it is necessary to use a high number of sunscreen, the skin is safe.

How long after the isolation cream to wash off

I've heard that you should wash off your barrier cream 3 hours after applying it, otherwise it will cause pigmentation, is that right? The ingredients of the barrier cream should not contain ingredients that cause pigmentation, nor should they form pigmentation spots, unless you buy a substandard product.