How to choose sunscreen equipment?How to pick sunscreen?Let the skin set in summer, learn practical sunscreen skills

In the hot summer, the ultraviolet rays are particularly strong, and sun protection is the focus of skin care for the season. Ultraviolet rays are actually divided into three bands, of which long waves of ultraviolet rays (UVA) and medium wave ultraviolet (UVB) can penetrate the atmosphere and achieve the dermis layer and epidermal base layer of human skin. The sun protection we call on weekdays is to prevent UVA and UVB. Two types of ultraviolet rays.

Long -term ultraviolet irradiation can cause various skin problems, such as sun exposure erythema, sunbathing, and aging skin, etc., which may even cause cancer. Wait. How to avoid ultraviolet damage? These practical sunscreen skills allow the skin to settle in summer.

When is it suitable for outdoor activities?

Watch the shadow length

The most critical point of doing sun protection is to try not to sun or less sun.

At 11-14 in summer, the ultraviolet rays are the strongest during this time, and this time should be avoided as much as possible. Especially young children, the skin is delicate, and it should not be moved in strong sunlight.

In addition to avoiding the strong ultraviolet rays of outdoor activities, it can also be judged according to the shadow length of the child standing under the sun. During the period of "shadow length shorter than height", outdoor activities are not recommended.

How to choose sunscreen equipment?

Remember a few numbers

If you do n’t want to go out, it is recommended to choose to obstruct the sunscreen, such as holding a parasol, wearing a sunscreen, wearing sunscreen, etc. The fabric products can directly block the sunlight. The higher the density of the yarn, the deeper the color, or the sunscreen coating. The stronger the ultraviolet absorption ability, the better the sunscreen effect.

In order to make the sunscreen effect better, you can remember a few numbers when selecting such products: 7.5, 25, 5%. The sunscreen caps should choose products with a length of 7.5 cm on the edge of the hats, so that the sun protection effect is better; if the parasols and sunscreens are produced, it is recommended to choose a formal manufacturer to produce. Products with a rate of <5%.

How to choose sunscreen?

Each profit and disadvantage should be selected on demand

Sunscreen is mainly divided into two types: physical sunscreen and chemical sunscreen.

Physical sunscreen products are mainly used to play sun protection through reflection and scattered sunlight, such as titanium dioxide and zinc oxide. Physical sunscreens are wide, relatively stable, and not easy to sensitize, and are suitable for sensitive people. However, there are certain disadvantages. If it is not easy to apply and opaque, it is easy to affect facial aesthetics.

Chemical sunscreen products are also known as chemical ultraviolet absorbers to achieve sunscreen by absorbing ultraviolet rays. Its advantage is that the texture is thin and transparent, but chemical sunscreen products have certain sensitivity, which may lead to contact with sensitivity and photosensitivity. People with a history of allergies should choose carefully.

Generally speaking, sunscreens have a sunscreen index (SPF). If you are afraid of being tanned, you must choose sunscreen products with a PA index.

According to different environments, you can choose different SPF/PA.

For example, in cloudy days or under shade, you can choose products with SPF15-25/PA+/++; you can choose SPF25-30+/PA ++/+++ in the sun; Plateau and other products can be selected for SPF50+/PA ++++.

The amount of facial coating is preferably 1 yuan coin. If the activity involves sweating or underwater work, waterproof and anti -sweaty products should also be selected. In addition, the sunscreen should be applied 15 minutes before going out, and the general product needs to be repeatedly applied every 2-3 hours.

The skin of infants below 6 months is delicate, and the risk of adverse reactions after applying sunscreen is high. It is not recommended. Sun protection is mainly based on sunlight irradiation and clothing cover. Infants from 6 months to 2 years old still recommend that clothing cover as the main sunscreen method, or you can choose physical sunscreen products within SPF10/PA+. It is advisable to use cream or powder products.

In addition to outdoor sunscreen, sunscreen is also required indoors. The indoor environment may be illuminated by ultraviolet rays. For example, the location of the window will be illuminated by the sun, or the strong ultraviolet lighting sources in the room, such as strong fluorescent lights, mosquito repellent lights, or neon lights in entertainment venues. It will cause the skin to be sunburned. You can choose sunscreen in SPF15/PA+to protect the skin.

There are also some light -sensitive foods that can easily cause solar dermatitis, such as fennel, amaranth, celery, gray, figs, mango, pineapple, papaya, etc. If you need to move in the sun for a long time, you should avoid eating.

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Author: Gong Yu (Deputy Chief Physician of the Dermatology Department of the Tenth People's Hospital of Shanghai)

Edit: Li Chenzhen

Editor in charge: Tang Wenjia

Picture source: Visual China

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*Wenhui exclusive manuscript, please indicate the source for reprinting.

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