ProShield is sold in 100 ml bottle format Reusable and fabric masks can offer varying levels of protection to users. ProShield Mask Spray offers double masking protection against harmful airborne germs and pathogens to users while increasing the fabric and reusable mask efficacy up to 99%. Using natural ingredients, it adds an additional layer of protection to reusable and fabric masks removing the need for double masking as per the CDC recommendation. Blocks up to 99% of germs Alcohol Free product Contains No toxic chemicals Safe to be used on the face and around the eyes Natural Ingredients Travel Size