Once. Masks can only be worn for a maximum of eight hours and it is best to change them regularly so they can remain effective.
3. Do you ship internationally?
Yes, we ship worldwide.
4. How good is your mask?
It's SUITABLE FOR ALL FACE SHAPES - Our 3-ply Mask is made to ensure that it will maintain a snug fit. Bearded men, though, should keep their faces clean shaved since it could affect the fit of the mask. Also, ALLERGY-FREE - it is made of soft material that is safe for anyone who is sensitive to certain materials. Those with allergies could use this.