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Is it dangerous to use products that have lye or tallow?

Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)

As the soap hardens during manufacturing, the lye continues to react with the fatty acids until it's no longer there. Some soap makers even add extra fat to make sure the lye is completely gone from the final product. Also, the U.S. Food and Drug Administration has strict rules as to how much and which kinds of tallow may be used in cosmetic products.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.