Also listed by its acronym HEPES, this is a buffering ingredient that helps water-based products achieve a neutral pH. Research shows that it can release free radicals when exposed to oxygen, making it a bad ingredient for skincare products. We advise avoiding this ingredient due to its problematic nature and lack of safe concentration protocols.
Hydroxyethylpiperazine Ethane Sulfonic Acid
category:
Miscellaneous
rating:
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Hydroxyethyl Urea