Canadian health officials say overexposure to boric acid has the potential to cause developmental and reproductive health effects. In fact, the Canadian government even recommends avoiding the use of boric acid in pest control and in arts and crafts, including using it to make homemade slime and modeling clay. You can use anything flexible as a mould for your bath bombs, so have fun looking around your home for things you could use. To allow your bath bombs to dry, leave them uncovered in a cool, dry place (away from taps and humidity).

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A breakthrough 2013 Slovenian study found that your skin can actually absorb these toxic dyes, particularly through recently shaven skin and the mucous membranes.

It is not intended to provide medical advice or to take the place of such advice or treatment from a personal physician.

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Some are contaminated with cancer-causing substances, while other test tube and animal studies link certain popular food dyes to neuron damage and a higher risk of brain cancer.

Our team includes licensed nutritionists and dietitians, certified health education specialists, as well as certified strength and conditioning specialists, personal trainers and corrective exercise specialists. For children, we suggest making half-shapes as it can be tricky to make a sphere that sticks together. This article is based on scientific evidence, written by experts and fact checked by our trained editorial staff. Outlets and voltage differ internationally and this product may require an adapter or converter for use in your destination.