Exact ratios of ingredients are a matter of personal choice.
In a jar mix:
- Rock salt or Himalayan Pink Salt
- Epsom salts (Magnesium Sulphate)
- Baking soda (Sodium Bicarbonate)
- Scented essential oil
- Dried Herbs (optional)
- Colouring (optional)
Shake well.
I say optional on the herbs because not everyone likes having to clean all the Rosemary out of the bath after!