Alternate use for breastmilk?

I have a couple of ounces of pumped breastmilk in the fridge and I know it is too old to give to my little one, so I was wondering if I can still do something else with it… I think I have read that it can help with cradle cap?? Does anyone know If that is accurate and if so, if it’s been in the fridge for a couple too many days for the baby to drink, is it still okay to use it for another purpose?

Sorry if this is a dumb question. I mostly just breastfeed, rarely pump currently as I’m still on maternity leave and thus haven’t had this problem before.