In a large mixing bowl, combine the Epsom salt and magnesium chloride flakes.
Add the dried hibiscus flowers to the salt mixture. The flowers will naturally tint the soak red.
In a small glass bowl, mix the orange and vetiver essential oils with the baking soda. This helps distribute the oils more evenly.
Pour the essential oil mixture into the salts and stir until fully combined.
Transfer the bath soak into a glass jar or airtight container for storage.
To use, add 1/2 cup of the Witches Brew Bath Soak to warm bathwater, stirring it in as it dissolves.