Could restastis relieve blepharitis?

Unlikely. Blepharitis is an inflammatory condition of the eyelids in the same family as dandruff or seborrhea. It responds to topical heat, antibtiotics and mechanical treatment although recurrence is common. Restasis improves tear flow when it is blocked on the eye surface. The changes it makes can improve eye health and comfort but will have little or no effect on the lids.