May 13th 2024
According to Keraplast, independent tests show that its keratin products have trace nitrosamine levels of < 1 ppb, while the maximum allowed is 50 ppb.
SupplySide MarketPlace 2012 Preview: OptiMSM, a Beauty Preservative
April 23rd 2012According to Bergstrom Nutrition (Vancouver, WA), recent evidence suggests that the company’s OptiMSM methylsulfonylmethane (also for joint health and inflammation) may allow personal care formulators to cut down on their use of preservatives.