Sensitive skin: sun protection factor (SPF) should not exceed 25 safest The point of choosing sunscreen for sensitive skin is to focus on physical sun protection, the lower the sun protection factor the less irritated the skin. As the sunscreen used in chemical sunscreen is a UV absorber, it has some skin irritation when absorbing UV rays, so people with sensitive skin still choose sunscreen products based on physical sunscreen. How to identify it? If the texture is very light, almost no color, must be the main chemical sunscreen, if the powder, the color is more white, the texture is thicker is the main physical sunscreen products. In addition, the sun protection factor of high products, sunscreen agent used more, so the sun protection factor of 25 or less the safest, if the outdoor time is long, you can make up a little more diligent. The last thing to note is that applying moisturizer before applying sunscreen can reduce the stimulation of sunscreen on the skin. The higher the sun protection factor the more oily the product must be, so oily skin people are recommended to use sun protection factor low products, otherwise they have to apply oil control products before sun protection. The sun protection effect has nothing to do with the sun protection factor, so do not blindly rely on high multiples of sunscreen products, experts remind: if only to and from work to see the sun, the sun protection factor in 15 to 25 can be, outdoor business people can choose the sun protection factor of about 30, if you go outdoor travel, to the beach, the sun protection factor of 40 to 45 is also sufficient. It should be noted that if at the beach, with a waterproof sunscreen is sure to remove the makeup, because the waterproof sunscreen oil content is high. Dry skin: isolation UVA is more important than sun protection factor We all know that sunscreen in addition to a sun protection factor, there is a UVA, generally a + to three + ranging, for dry skin, choose UVA plus the more the better, because UVA isolation is long-wave ultraviolet, and long-wave ultraviolet not only can we tan, but also destroy the lipids and collagen in our skin, so that the skin become drier.