lanolin vs lanolin free?

Sarah • mama bear bryant

does anyone know the difference I have two different nipple balms and I hate to say this but I really don't know why it matters if it's free of it or mostly lanolin is it just a preference choice ,is there an actual difference? I know it sounds silly I just always put a bit of balm on my nipples before pumping and kinda hoping there's not a big difference between the two