Bath bombs can be tricky to make, because they are very sensitive to humidity. Too moist, they fizz prematurely, too dry they crumble and loose their shape. Still they are so cool it’s worth the trouble.
- 1 cup baking soda
- 1/2 cup citric acid
- 1/4 cup cornstarch
- 1 pack (3.2 oz) unsweetened dried milk
- 1/2 cup epsom salt
- 1 tbsp unsweetened cocoa powder
- 1 tbsp melted cocoa butter (10g)
- 2 tbsp sweet almond oil
- 1 tbsp chocolate fragrance
- 1 tbsp water
Combine dry ingredients in a glass bowl. Mix well and crush any clumps.
Mix wet ingredients in a jar, and VERY SLOWLY dribble the wet solution into the dry ingredients, mixing all the time with a whisk. If the dry ingredients start to bubble, stop pouring and mix till the reaction stops. When all ingredients are combined mixture should look and feel like moist sand, and should hold together when pressed into a ball. If it still crumbles, add a few drops of water, preferably with a spritzer.
Press the mix into your mold, preferably a silicone baking mold. Let sit for about an hour, then gently remove from mold and let dry overnight.
These make great gifts for kids and adults alike. Getting them out of the mold without breaking can be tricky — which is fine because then you get to keep the ugly ones for yourself. If they all break you can crush them to powder, let the powder dry out, then store it in a sealed jar. Fizzy bath salts feel just as good as the bombs, and they look very attractive in a pretty jar. Use about 1/3 cup for each bath.
Store in an airtight container and protect from humidity.