Christmas Tree Bath Bomb by Iscream — festive, tree-shaped fizzing bath bomb for a magical, holiday-scented bath that puts the season right in your tub. The holiday season, one bubble at a time. Iscream's Christmas Tree Bath Bomb is a festively shaped fizzing bath bomb that transforms bath time into a genuinely seasonal experience — beautiful scent, satisfying fizz, and a design that makes this an immediately loveable holiday gift.