In addition to using Soothe eyedrops, which are preservative free, I wash my eyelids
once or twice
a day using the suds from an anti bacterial dial soap bar. This is a tip which I got previously got on medhelp. While it may seem as if it is difficult to do, it is not. Just use warm water, dial suds and rinse well. The dial bar soap is a lot cheaper to use than the eyelid cleansers sold in the pharmacy. If you decide to try it, I hope it works out for you. Best wishes.