This necklace (along with a baltic amber ankle bracelet) helped our baby cut both bottom teeth with hardly a peep. Im talking NO sleepless nights and no major breakdowns during the day. We don't use numbing creams or painkillers on our precious little one so we used these instead! Get a few homeopathics or Young Living essential oils as back up if you'd like but these really did the trick for us!
My only complaint was the clasp gave us a little trouble a couple months in, my husband fixed it in a jiffy though.