Inquire Sym-WhiteActivated Resorcinol 1. Efficacy in reducing melanin. Which one is higher? 2. Sym-White is mixed in the final solution. (but the solution must contain oil) but if it is Activated Resorcinol to completely dissolve in the oil, right?
Hello 1. Sym-White is advertised by the developer as being more efficient. So use at a rate of only 0.5% is enough while Activated Resorcinol is recommended at 1.0% level.