Common Q&A:
(1) What type of sunscreen should be used for infants, pregnant women, and sensitive skin?
A: It is recommended to primarily use physical sun protection methods (such as sun umbrellas, sun-protective clothing, hats, etc.), supplemented by physical sunscreen (containing only titanium dioxide and zinc oxide).
(2) Can sunscreen from last year still be used this year?
A: It is best to avoid using it. Sunscreen that has been opened for a long time will have volatile oily solvents, causing the powder to precipitate and reducing its effectiveness. Therefore, it is recommended that if sunscreen has been opened, it should be used up within one season. Even if the sunscreen is unopened, it is not recommended to keep it for more than 2 years (the shelf life of sunscreen is generally 3 years, but sunscreen that has passed 2 years is usually treated as discontinued or discounted products). Do not stockpile large quantities of sunscreen just because it’s on sale.
(3) Is sunscreen needed indoors or on cloudy days?
A: Sunscreen should be applied all year round, indoors, and on cloudy days. Sunscreen should be applied every day, regardless of the weather. Even on cloudy or rainy days, sunscreen should still be applied. Thick clouds may make it appear cloudy, but they do not provide effective UV protection as 90% of UV rays can penetrate clouds. Whether it’s cold winter or hot summer, UV rays are omnipresent.
