Quaternium-15
Quaternium-15 is a preservative used in cosmetic and personal care products to prevent microbial growth and extend shelf life. It is a formaldehyde-releasing agent, which means it slowly releases formaldehyde to kill bacteria and fungi.
key benefits
Effective preservative to prevent microbial growth
Extends the shelf life of cosmetic products
ratings
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Preservative
what to pair with
Pair with other preservatives for a broader spectrum of microbial protection.
when to use
Use in formulations where long-term preservation is essential, typically in rinse-off products.
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