Every day is your birthday when you bathe with one of Feeling Smitten's ultra-sweet (but diet-friendly) bath cupcakes, $11. These flamboyant treats overtake your bath with a sugary, baked-good scent. (But try your best not to drink the bath water -- it won't taste like it smells). These are special-occasion bath bombs, for sure. Not to mention a top-notch gift idea.

Lush's Sex Bomb, $6.65, has all the bells and whistles: Vivid pink colors and floating faux flowers that turn your tub into a sexy, girly paradise. Match that with the ambience of a hotel, and you've got yourself one decadent evening. Here's the catch, though: After you're finished, those colors and flowers end up in the form of gloppy residue at the bottom of the tub. But at a hotel, well, that's someone else's problem.

Not all bath bombs are built for those with irritation-prone skin, but Lush's Honey Bee bath bomb, $6.45, is safe for all skin types. Honey is a naturally soothing ingredient, and the product's aloe calms and softens the skin -- so if you're wary of harsh ingredients, this is your bath bomb.