I've done this many times. As long as the contents haven't been contaminated somehow, you're good.i have a bottle and a half of mast/npp blend. as I order more, can I still use the half bottle after roughly 4-6 months of being open? still good?
i have a bottle and a half of mast/npp blend. as I order more, can I still use the half bottle after roughly 4-6 months of being open? still good?