How to use sunblock

Since the summer, nearly 1/3 of outpatient dermatology patients are due to the use of improper sunscreen cosmetics and the onset of most skin allergy symptoms, while individual patients with severe facial redness and swelling symptoms. Experts say that many consumers do not understand the use of sunscreen cosmetics, blindly purchase and use, resulting in the phenomenon of "spending money to disfigure".

The sunscreen, why also tanned

Some women reflect that they usually pay attention to sun protection, home equipped with different SPF (i.e. sun protection factor) sunscreen, before going out must also be coated with some, but still can not avoid being tanned sunburn. In this regard, the hospital's medical aesthetic experts pointed out that whether sunscreen can effectively resist ultraviolet rays to protect the skin from damage, in addition to the quality of the product, whether the correct use is another important prerequisite for its role, and in the patients treated, it can be said that 80% of people do not understand the correct use of sunscreen.

Myth 1: The thicker the sunscreen, the better

Many girls like to apply thick sunscreen before going out, thinking that this can escape the chase of the sun. But the fact is not. One is that sunscreens are made up of chemicals, which can irritate the skin and even cause skin allergies under the effect of high temperatures and human sweat. The second is too much sunscreen will block the pores, sweat gland mouth, is not conducive to sweat and sebaceous secretion, easy to induce skin infections and cysts.

Myth 2: The higher the sunscreen index the better, the more expensive the sunscreen the better

Choose sunscreen products, should pay special attention to its sunscreen performance, that is, the ability to filter, blocking ultraviolet rays (SPF and PA). Sunscreen products are generally marked with SPF and PA index. Some people think that as long as you buy expensive, high sun protection index sunscreen, it is foolproof. This is actually a misconception. The higher the sunscreen index, the more chemical ingredients it contains, the greater the irritation to the skin, and the more chances of allergic reactions. The correct way should be to choose sunscreen according to your own skin characteristics and sunscreen needs. Before buying a sunscreen, you should try it on the inside of your own wrist. If within 10 minutes, the skin appears red, swollen, painful, itchy, etc., it means that you are allergic to the product and should switch to another product. When buying sunscreens, you should first consider what your sun protection needs are. If you only use it on your way to and from work, you can choose a sun protection index of about SPF 15; if you want to do long outdoor activities or travel, it is recommended to use sunscreens with SPF 20 or so; if you want to be active in the hot sun or go swimming at the beach, you should use sunscreens with SPF 30 or so and waterproof functions.

Myth 3: As long as the sunscreen is applied, everything is fine

Many people think that as long as they have applied sunscreen, they can go out safely and will never get a tan or sunburn. This is actually not true. The wisest choice is to avoid going out during the most intense hours of sunlight. Even if you go out, you should do double protection: apply sunscreen and hold a sunshade.

The difference between physical and chemical sun protection

The principle of sunscreen is to form a protective film on the skin, thus refracting ultraviolet rays from the skin, physical sunscreen and with the growth of time to apply sunscreen, sunscreen is also oxidized, absorbed to a certain extent sunscreen effect is also weak, and over time there will be no more. The disadvantage of chemical sunscreens is that if used for a long time, it will cause skin dependence and bring damage to the skin cells and skin structure, especially cosmetics containing more lead and mercury, so the first task is to clean in time. At the same time, when you go out in the summer, your face will inevitably absorb a lot of dust, so when you come back from outdoors, the first task is to remove makeup and thoroughly wash off the sunscreen on your face.

Clean and clean sunscreen with a face wash

A normal cleansing cleanser with strong grease properties can thoroughly cleanse chemical or physical sunscreen and does not require a cleanser with makeup remover function. Within a few minutes after washing your face, as long as you feel that your face is not tight, no greasy feeling is a sign that your face is clean. If you feel that your face is too thick, such as blackheads on the nose, you can choose a face wash to get rid of exfoliation, of course, because many sunscreens are now more waterproof, using a professional makeup remover oil to clean better.