Addition Studio, Australian Native Bath Brew. Bath Brew is a giant tea bag for the bath, used as a remedial & relaxing bath soak. Steep in this tonic and enjoy the benefits. Riverstone: With Australian Olive Clay, Zeolite Clay, Australian Tea Tree, Epsom Salt & Certified Organic Essential oils; Pink Grapefruit, Rosemary, Fennel Sweet, Juniperberry, Carrot Seed. Size: 120 x 120 x 15 mm (100g bag) Origin: Blended by hand, packed with care in Australia.