Make Christmas Tree bath bombs with beautifully scented essential oils, colored minerals, and naturally-fizzy ingredients. Choose to make a batch of lavender bath bombs, using lavender essential oil and ultramarine violet mineral, a citrusy batch with may chang essential oil and yellow iron oxide, a green Christmas tree bath bomb with peppermint essential oil and chromium green oxide, or a lovely pink bath bomb with rose-geranium essential oil and ultramarine pink mineral.
Place the sieve over the mixing bowl and pass the baking soda, citric acid, epsom salt, and mineral color (not the gold Mica though) through it and into the bowl below. Use a spoon to stir and press it all through.
Mix in the wet ingredients
Measure the essential oil directly into the dry ingredients and then mix it in with your hands. Next, wet the contents with a few sprays of the witch hazel, then mix it all together with your hands. Repeat until the bath bomb mixture can hold form when you squeeze it in your hands. I used 18 squirts of witch hazel to make mine, though the amount coming out of other spray bottles may vary.
Decorate the mold's cavities
Spoon about half a teaspoon of gold mica into the mini sieve (strainer) and then tap it over the mold cavities. It's pretty much like dusting a cake with powdered sugar. Next, sprinkle your chosen dried herb or flowers into each cavity. Just a little though.
Make the bath bombs
Now fill each mold cavity with the bath bomb mixture and pack it in tightly. There's enough mixture to make six or seven Christmas trees. When it's all packed in, place the mold in your freezer, and leave it there for 45 minutes. This helps the fizzy mixture to set solidly and makes it easier to take them out of the molds.
Cure the bath bombs
Gently pop the bath bombs out of the mold and set them on bubble wrap or a hard surface that's been covered in clingfilm. Leave them there to first defrost and then to harden up. This will take about a day.
Use and gift your DIY Christmas Tree Bath Bombs
Once made, you should keep the bath bombs in a sealed jar until they are ready to be used or gifted. As gifts, I find that they look pretty tucked into organza bags. You can see them through the material and the strings on the bags make them easy to hang in your Christmas tree or to tie to Christmas stockings. To use a bath bomb, drop it into warm bathwater. Watch as it fizzes and dissolves before your eyes before releasing the essential oil and body-loving epsom salt.