TRIPLE-TESTED for PURITY: Our finest Aztec Healing Clay powder is tested for heavy metal contamination and microbials because you should only consume the purest, 100% raw, unrefined Calcium Bentonite Clay that has no additives, binders, excipients, fillers, preservatives, or ANY chemicals in it. EDIBLE & PERFECT for INTERNAL DETOX: Tested, filled and packaged in an FDA-approved facility. Safe and perfect for internal consumption as well as skin care, acne treatment, etc. If you’re not familiar with using clay, please check with your naturopath before experimenting with it. You should always seek the advice of a professional before using any cleansing products. MUST HAVE for DIY PROJECTS: Huge bulk bag. You will have enough fine powder to enjoy all DIY projects at a fraction of the cost of little jars! Shelf Life: 5 yrs.