Breastmilk works great for pink eye. We've had a horrendous case of it sweep through our household. My toddler had it for a week, then I had it for a week, then my toddler got it again and had it for another week (I've missed so much work it's ridiculous!). I got a prescription for antibiotic drops for my toddler when she got it the second time (normally I let her immune system take care of it. I'm not a big fan of medication when the body can manage on its own, but we've never had a case this bad or this persistent). Well, her infection started going away but then my 5-month-old started getting it, so I looked online for remedies for infants and found a suggestion to use breastmilk.
I expressed some breastmilk into both my baby's eyes (to treat the infected eye and prevent the other eye from becoming infected). Within HOURS the redness was nearly gone. By the next day, it was COMPLETELY gone. Seriously!!! What I did was express several drops onto her closed eyes and then let her open her eyes slowly. The milk seeped into her eyes and then I simply blotted away the excess with a clean towel. I did this four times over the course of the day. Next day she was good as gold.