What's the difference between physical sunscreen and chemical sunscreen? How to choose?

Sunscreen is our girl's "job" all year round, but many girls don't know how to choose sunscreen, and they can't tell the difference between physical sunscreen and chemical sunscreen. There are not a few people who follow the trend to buy sunscreen. Today I will talk to my sisters about the difference between them. I just use the knowledge of sun protection I have learned in these years to popularize science, and then it's so easy to buy sunscreen and products suitable for my own use.

The most commonly used sunscreen on the market is generally divided into two types: physical sunscreen and chemical sunscreen. The composition and sunscreen principle of the two are different. Let's talk about the difference between physical sun protection.

? Physical sun protection

The principle is that applying physical sunscreen to the skin will form a physical sunscreen film, which can directly block the reflected ultraviolet rays and isolate and reflect the sunlight. In layman's terms, your skin is like a mirror, and the sunlight directly reflects back.

The main components of physical sunscreen are added titanium dioxide and zinc oxide. Look at the ingredient list when you buy it. The existence of these two ingredients means that it belongs to physical sun protection.

superiority

The biggest advantage of physical sun protection is safety &; Gentle. Because solid particles are added, the particle size is relatively large and will not be absorbed by the skin. It is mild and safe to use, and the sunscreen effect is relatively stable. As long as the quality of your sunscreen is good enough, or it is applied in time, the sunscreen film will continue to play a sunscreen role on the skin, and it will play a sunscreen role immediately after application. There is no need to apply it in advance.

disadvantaged

The texture will be thicker. It will look fake white when it is first painted. If your skin feels bad, you will feel sultry and greasy. Most physical sunscreens require makeup removal.

Suitable skin type

Dry skin and sensitive skin. Be careful with oily skin, it is easy to get acne.

Chemical sun protection

The principle of chemical sun protection is to achieve the purpose of sun protection by absorbing harmful ultraviolet rays through some chemical components in the sun's rays. After applying sunscreen, the sunscreen molecules inside will be absorbed by the skin, and then the components that will make the skin black in the sun will be filtered out to play a sunscreen role. The opposite of physical sun protection is absorption and filtration.

Chemical sunscreen cream mainly contains benzophenone, ethylhexyl salicylate, Oaklin and other ingredients, which means that this ingredient is too difficult to remember. Titanium dioxide or zinc oxide are basically chemical sunscreen, so it is easy to distinguish ~

? superiority

Compared with physical sunscreen, its biggest advantage is that the texture is very refreshing, and the skin will not feel heavy after application. Suitable for girls who pursue thinness and breathability, and do not need to remove makeup. You can wash it with facial cleanser.

disadvantaged

Because it is absorbed by the skin, it will cause certain irritation to the skin. If you sweat, it is easy to melt the sunscreen, and you need to start applying it 15-20 minutes before going out to play a sunscreen effect.

? Suitable skin type

Skin barrier healthy oil skin and mixed oil skin. It is best not to use sensitive ones.

Whether it is physical sunscreen or chemical sunscreen, each has its own advantages and disadvantages, and there is no absolute use/bad use. Applicable people and needs are different, there is no difference between good and bad. In addition to ingredients, sunscreen has two very important signs that cannot be ignored, that is, SPF and PA values. Generally speaking, these two values represent the sun protection time and intensity. If you commute daily, you can choose SPF25-35, PA+ or PA++. If you play outdoors or go to the seaside in summer, you need to choose SPF50 and PA++.

I believe everyone has a certain understanding of physical and chemical sun protection after reading it. In fact, in addition to applying sunscreen, it is the most important thing to do hard-core physical sunscreen at ordinary times, that is, wear a hat, an umbrella and a sunscreen suit when going out, so that the sun will not directly hit you, and with the "blessing" of sunscreen, the sunscreen effect is excellent ~

It is also very important to master the correct application method of sunscreen, which directly determines your use effect and experience. Many treasures don't want to use sunscreen because they don't apply it well. By the way, how to use sunscreen ~

Cleansing-Toner-Emulsion-Sunscreen (do the basic work of skin moisturizing, and finally apply sunscreen)

Sunscreen must be sufficient, but not excessive. Adequate sun protection can have the effect of sun protection. Excessive sunscreen will make your face feel like a layer of lard ... the exact amount can be compared with a dollar coin. Just squeeze this amount each time.

Thick sunscreen can be applied by tapping, and thin sunscreen can be applied by fingertips, so that sunscreen can be more docile to the skin against pores from bottom to top without clogging pores. Remember never to turn around? Easy to rub mud, don't blame the poor quality of sunscreen.

However, there are many materialized sunscreens on the market, that is, physical sunscreen and chemical sunscreen, which combine their advantages relatively. Except for severely sensitive muscles, it is basically suitable for all skin types, depending on the individual ~ the price is relatively expensive, such as Anemone.

Which one to buy, the steamed stuffed bun will start according to its actual situation and needs. I hope my answer can help everyone ~ ~