Pionin, INCI name: Quaternium-73., CAS: 15763-48-1. It is a kind of yellow odorless crystalline powder, an acne inhibitor with antibacterial activity that can be used as a preservative with a strong ability to kill bacteria,Staphylococcus, E. coli, etc., and has a antiseptic property better than parabens. It can also inhibit melanin production. Clinical studies have shown that its MIC forP. acnes is 0.00002%, and the rash can be reduced by 50% after two weeks of use. 0.1ppm of dosage can completely inhibit the formation of melanin, which is better than kojic acid. It is highly safe with good heat and light stability and pH stable between 5.5 to 8.0. Low required dosage makes it very cost-effective. Purinin has strong antibacterial and anti-melanin effects andis effective even in low dosage.
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