PRODUCT PROFILE
Quaternium-73 is approved by the Japanese Ministry of Health, Labour and Welfare (MHLW) as a Quasi-Drug ingredient and is commonly used in Japanese over-the-counter (OTC) products for acne treatment.
Pionin (the common trade name) exhibits potent antimicrobial activity by disrupting bacterial and fungal cell membranes, demonstrating excellent efficacy against Cutibacterium acnes. It effectively inhibits comedones and acne, suppresses melanin formation, and offers high safety despite its strength. It is widely used in acne treatment and brightening/spot-correcting formulations.
Clinical studies indicate:
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An exceptionally low MIC (Minimum Inhibitory Concentration) of 0.00002% against C. acnes, with a 50% reduction in skin lesions observed after two weeks of use.
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Complete inhibition of melanin formation at a concentration of 0.1 ppm, outperforming kojic acid.
EFFICACY
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Antimicrobial / Antibacterial
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Acne Treatment & Anti-Inflammatory
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Inhibition of Melanogenesis
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Reduction of Post-Acne Hyperpigmentation (Dark Spots)
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Preservative Booster
APPLICATIONS
Suitable for various skincare products, highly recommended for:
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Oil-control and anti-acne products
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Anti-comedogenic formulations
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Skin-brightening and spot-correcting products
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Men’s skincare products
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