Calcium Peroxide in a whitening toothpaste
I have encountered some discrepancies in using Calcium Peroxide in the whitening toothpaste. According to an EU regulation, there is a limitation in using Hydrogen Peroxide. There should be a maximum of 0.1 % present or released. I would like to use as much Calcium Peroxide as possible. Is it approx. 0.2 % or could I use more? I mean my supplier recommended me 2 - 4 %. It made me confused.