Can waterproof mascara cause blepharitis? is it healthy to use?

Blepharitis: Makeup including mascara can worsen underlying blepharitis in some patients. You can try starting the new mascara and then discontinue it if your lid disease flares.

Yep!: Water proof mascara contains a derivative of coal tar. Also, bacterial contamination can occur in the bottle. Though this bacteria is usually harmless, it can cause irritation when it enters the tear film, causing burning and eye redness. I would suggest using a natural product from a reputable company like aubrey or jason.