一般说来,在冬天、夏日的早晚和阴雨天,选用标注SPF值为2～4的防晒品足矣;在中等强度的阳光照射下,使用SPF值为8～10的防晒品较适宜;而户外工作、在夏日强烈阳光的照射下,则应选用SPF值15或更高的防晒品。对于高原和长期户外工作等在强紫 In general, in winter, summer and rainy days, the selection of SPF value of 2 to 4 sunscreen is enough; in the moderate intensity of sunlight, the use of SPF value of 8 to 10 sunscreen is more appropriate; Outdoor work, in the strong summer sun exposure, you should use SPF 15 or higher sunscreen. For the plateau and long-term outdoor work in the strong purple