Should I apply sunscreen on cloudy days? Do you know how to use sunscreen correctly?
Should I apply sunscreen on cloudy days? Do you know how to use sunscreen correctly?
Ultraviolet rays in the sun will make the skin tan and age, while visible light such as infrared rays will also produce free radicals, which will make the skin tan and age. Therefore, even in the weather with weak ultraviolet rays, it is necessary to apply appropriate protective sunscreen to protect the skin.
How to use sunscreen correctly
1. Correct use order of sunscreen: facial cleanser-toner-emulsion-cream-sunscreen.
(PS: Most isolation belts have the function of sun protection, so they don't need to be reused if it's not the weather with strong ultraviolet rays)
2. When should I use sunscreen?
SPF 15, below PA+ is enough.
Travel: SPF 15 ~ 30, PA++ will do. Swimming: SPF30, PA++, sunscreen must be waterproof. Of course, this is not absolute. Especially this year, this boundary has been broken. This year's sunscreen feature is "high magnification, light but not greasy, although thin, but the sunscreen effect is very good."
3. Don't mix different brands of sunscreen.
At least, mixed use will increase the chance of skin allergy. Different brands of sunscreen have different ingredients. If the mixture is overlapped on the skin, the ingredients may interfere or repel each other, reducing the sunscreen effect and even causing skin allergies.
How to avoid rubbing mud
After applying lotion or gel, wait three minutes for the skin to fully absorb the essence of lotion and gel, and then apply sunscreen. This will not make the face feel heavy and greasy, and the skin will be easier to rub mud.
How to choose physical sunscreen and chemical sunscreen?
1. There are two kinds of sunscreen commonly used in physical sunscreen: titanium dioxide and zinc oxide. They can isolate UVB and short-wave UVA well, but their protective ability against long-wave UVA which is easy to cause photoaging is relatively weak. Because physical sunscreen mainly acts on the surface, it has high safety and is a good choice for sensitive skin and acne skin.
2. Chemical sunscreen is more irritating because it forms a film on the skin surface, but its metabolism is in the skin, so it is best to avoid this choice for sensitive muscles and acne skin! On the contrary, oily skin and oily skin are more suitable.
3. There is also physical and chemical mixed sun protection, which has both physical and chemical sun protection, which can protect the skin from ultraviolet rays more comprehensively. It can be seen that both dry skin and dry skin can choose this kind of sunscreen products.