I have allergies, that is an understatement, I am allergic to the world! I have tried a lot of products, sprays, medications, etc. This pillow protector has actually made a difference. I didn't realize how allergens could just live in my pillow, but after getting a new pillow and putting this on, I wake up a lot less often, and will a significantly less stuffy nose. Its not a cureall by any means, since allergens are just flowing around the house, and our dog has free reign of the bedroom (wife's non-negotiable rule) But it really works. Its a simple investment in my health. I'm getting one for every pillow in the house!