This problem may indeed be a tangled problem for people who make up, especially in summer, because the sunscreen factor of the base makeup primer is generally low, so you need to apply sunscreen separately. Should you use sunscreen first? Use isolation, or use an isolation with a high sun protection factor. In order to answer this question, let’s first understand what isolation is and what is sunscreen. I have seen some big Vs in the beauty field before, saying that isolation cream is an IQ tax, and isolation is actually sunscreen, there is no difference. But for a girl with makeup, sunscreen and isolation are not the same thing. The initial purpose of the sunscreen is indeed to block ultraviolet rays, so it also adds sunscreen, which is no different from sunscreen, except that the SPF value is relatively low. The sunscreen is generally sufficient for daily commuting. This kind of sunscreen with low-power sunscreen function that only blocks ultraviolet rays is more common in the European and American markets. Later in Asia, especially in the Japanese and Korean products, the base cream evolved into a low SPF makeup product, which has the same effect as a low SPF concealer or liquid foundation. In addition to blocking ultraviolet rays, it also brightens the skin tone. Improves dullness and modifies skin blemishes. I remember the whitening cream from Za’s that I liked to use when I was a student. The price is cheap and easy to use. When the base cream was just popular, this product could be regarded as a popular base cream product. At that time, I was not used to make-up, but I felt dull when I went out without makeup, so I usually use Za whitening sunscreen after skin care. In addition to the function of sunscreen, it can also brighten and improve dullness. Therefore, using a base cream is equivalent to using sunscreen plus liquid foundation (of course, there is no strong concealer function of foundation), which is simple and convenient, and the price is still cheap. >Later, different colors of isolation cream were released to modify different skin tones. For example, the famous Lanzhi’s isolation cream, purple version is suitable for dull yellow skin, green is suitable for red bloody skin with acne marks, and pink is suitable for comparison by itself Fair complexion. Later, many domestic brands have imitated Laneige’s multi-color base cream, and they are also very popular. Later, makeup became more and more complicated. Before applying makeup base, it became popular to use makeup primer, so the base cream gradually evolved into a three-in-one product with sunscreen and makeup primer, in addition to blocking UV rays and brightening skin tone. For skin tone, it also has the effect of moisturizing and oil control before makeup. For example, the popular CPB home base cream has a makeup primer for oily skin, and a glossy makeup primer for dry skin with a moisturizing and bright complexion). Some makeup primers add a lot of volatile silicone oil to the formula, which makes the skin feel very smooth. They are called pore invisible devices. For example, the pink makeup primer from W.lab in South Korea is a good way to modify pores. The role of. Therefore, the barrier cream is no longer the original function of simply isolating ultraviolet rays, which is also very different from the role of sunscreen. Of course, there are many claims on the market that the barrier cream isolates make-up, air pollution, blue light radiation, etc. This is actually some active ingredients in the formula that may have been tested for anti-pollution and anti-blue light at the raw material supplier, so I claim that the barrier cream It also has anti-pollution and anti-radiation effects. Regarding isolation makeup, this is easier to understand. It is nothing more than taking the isolation cream as an intermediate step between skin care and makeup. Some people say isolation is the first step of makeup. The barrier cream, like sunscreen, has a film-forming agent added to the formula, so after using the barrier cream, it is as if a layer of skin has formed, which can isolate the subsequent damage of make-up. However, I personally think that this is actually a pseudo-need, because the harm of cosmetic products to the skin is not as terrible as everyone thinks. As a person who puts on makeup every day, I don’t feel that makeup adds a burden to my skin. Instead, I must be careful when removing makeup. Improper makeup removal can easily damage my skin. Therefore, I think the segregation of make-up is a gimmick, there is no need to take it too seriously. After understanding the true role and evolution of isolation, and comparing sunscreens, it is not difficult to see the difference. And whether to use sunscreen first, isolation first, or isolation only, I think there are several situations for people who do not make-up, if the ultraviolet rays are relatively low, directly use the isolation with a certain sun protection effect That’s it. Not only can it be used as a daily low-power sunscreen, but also can be used to brighten and modify the skin tone. The isolation is equivalent to a sunscreen plus a foundation. If you feel that the sun protection factor of the barrier cream is too low in spring and summer, you can choose a barrier cream with a high sun protection factor, such as La Roche-Posay’s SPF50/PA+ sunscreen and brightening lotion. This sun protection factor is the highest among all the sunscreens. It may be a formula designed according to the sunscreen, but it also has some brightening effects. Last year, it also won the TOP1 award in the isolation category of the Japan Cosme Awards. But one thing that is not very friendly to makeup people is that it is easy to rub mud, especially when used with my makeup setting spray, mud rubbing is more obvious. For those who don’t wear the foundation makeup, I think this base cream is enough to use directly, no need to use sunscreen. For people who make up, generally choose isolation to emphasize the role of makeup primer, and such isolation factor before makeup is very low or even without sunscreen, so generally when ultraviolet radiation is very strong, such as summer, you must use sunscreen use. For example, I previously recommended the French Dabao makeup primer that is suitable for dry skin or mixed skin. It is completely used for moisturizing and primer before makeup. The main function is that the follow-up makeup will not be powdered or peeled. At this time, you must cooperate with sunscreen. I used the cream, because there are very few sunscreens in the foundation, and many do not even add sunscreens, and there is almost no SPF value directly on the foundation. Even Sofina’s oil-control makeup primer, which has an oil-control effect, has an SPF value of only 16, PA++. If you just use sofina to isolate the sun before makeup in summer, the sun protection factor is definitely not enough. Of course, if you don’t emphasize the effect of the makeup primer too much, just simply sunscreen isolation, in fact, there are many SPF values on the market that are enough for daily use, and will not make the follow-up base makeup produce muddy or heavy greasy feeling. For example, the Orbis sunscreen that I mentioned in the answer to the last spring skin care precautions, SPF34, PA+, sun protection factor is enough for my daily use in spring, can brighten the skin tone, follow-up foundation will not rub mud and also It’s quite docile, so I generally don’t use sunscreen this season, but directly use isolation. Maybe in summer the ultraviolet rays are more intense (especially UVB is more powerful), and the oil output is higher, I will choose a high-power sunscreen plus an oil control and isolation makeup before using it together. The question is, if isolation and sun protection are used at the same time, who should be used first? My personal recommendation is to use sunscreen first, then isolation. The first reason is because sun protection is generally used as the last step of skin care, and the first step of make-up before isolation makeup. The second reason is because sunscreen is generally greasy. If you use sunscreen after applying the isolation, the base makeup may not be very compliant, or even rub the mud, and the isolation also loses the effect of the primer before makeup. In addition, my suggestion is that if you must use sunscreen and isolation at the same time, I recommend choosing a more refreshing sunscreen. Because sunscreen is used and isolation is used, it may add heaviness and greasiness to the follow-up base makeup, while general sunscreens, especially high-power sunscreens, are relatively greasy. I personally like to use more refreshing sunscreen, such as Biore Water Sensitive Sunscreen Gel, which is cheap and easy to use, and has a high SPF value. In summary, my suggestion is to use a sunscreen with normal or partial sun protection factor. High barrier cream is enough, no need to use sunscreen. For people who make up, if you use a base makeup primer with a very low sun protection factor or no sunscreen, in the case of strong UV, the superimposed use of sunscreen is still necessary. It is recommended to use sunscreen first and then use isolation, and try to choose A relatively refreshing sunscreen to avoid heavy and greasy base makeup. Of course, if you can find a suitable sun protection factor and also have the isolation of the makeup primer, it is the best. Try not to use sunscreen and isolation at the same time to avoid heavy base makeup.