Instructions for bath use For relaxation and general wellbeing, add 100g-250g to a warm bath and soak for approximately 20 minutes. For dry, itchy skin such as eczema and psoriasis, add 500g-1000g to a warm bath and relax. Instructions for footbath Use Add 100g-250g to a footbath or bowl and soak feet for 20 minutes, then rinse.