[MyHypatia]

Sometimes I wear a mask to keep the sun off my face or if there is a lot of pollen or dust outside.

[myko]

I wear my respirator to mow the lawn when my allergies are bothering me. Gets some funny looks occasionally.

[vxNsr]

Just curious to understand how does a mask over your mouth keep the sun off of your face (presumably the eyes)?

[accoil]

Could be to stop sunburn. Hat with brim protects the top half, and keeps it out of the eyes. Mask protects the lower half.