To maintain and store the ClearMask™ brand properly, we recommend storing the masks inside the original box in a cool, dry location away from direct sunlight. Only remove the masks from the box immediately before use.
If the foam portion of the mask experiences a slight discoloration, the yellowing is a natural reaction that occurs when the foam is significantly exposed to light or heat. Quality or performance of the mask is not affected. To minimize any discoloration, we recommend following the storage instructions above.