I don’t know if it is voodoo magic or whatnot, but as soon as we put the 11” amber necklace on my 11 1/2 month old little girl, she stopped drooling and being fussy. Within 3 days, she had two teeth pop through and nobody knew she was teething; her spirits were high and she was just as happy as ever. These things work so well, I already purchased a 13” necklace for a few months down the road.