Spazazz Muscular Therapy Spa Salts offers premium spa therapy to relieve aches and pains while also reducing tension and stress. Spazazz Crystals are ideal for use in spas, hot tubs, jacuzzis, and Whirlpool baths, and will not damage, stain, or negatively affect equipment or surfaces. These spa bath salts feature powerful aromatherapy with natural coloring and are vitamin infused for all natural therapy.