Didn’t work for me
I used them with my 2nd breastfed baby after allowing my nipples to heal somewhat after significant damage to them which involved bleeding. They were still sore and tender but not bleeding anymore, but I found these did not really help. Baby sucking on these over the nipples hurt just as much. Though my baby had a slight tongue tie, my nipple didn’t sit right into it and it slipped off easily - hence it hurt, and so I gave up as my baby got frustrated from not being able to get milk out through it. I didn’t try it again even after my nipples healed, so I never gave it a real shot. It could work for someone else without my factors, I don’t know.