Bomb Cosmetics Hydrangea Hydration Bath Bomb is an easy, convenient and fun way to use aromatherapy and essential oils in everyday life. Simply pop in the bath to create a moisturising, fizzing sensation, throwing the oils and scents into the air. Magnolia and Ylang Ylang essential oils restore your soul, spirit and skin. Completely cruelty-free, vegan-friendly & handmade.