Is the sunscreen mask really useful?

Sunscreen mask has a certain effect, but it needs to be matched with a sunscreen cap to prevent sunburn above the eyes. The sunscreen mask is just wrapped under the eyes. Simply use a sunscreen mask, but there is no sunshade and hat on it. Exposed to the sun for a long time, there is a clear dividing line. You can see that the upper part of the eye is tanned, while the skin in the lower part is still very white. Sunscreen mask can protect most of the face from direct damage by ultraviolet rays, thus reducing the risk of tanning and sunburn. However, in order to really protect the skin from the sun, other sun protection measures should also be done well, so that every part of the body is not affected by strong ultraviolet rays as far as possible.