The manufacturer of Switzerland claims that the product of Switzerland is of higher quality. The Chinese manufacturer claims that the product of I have the standard equivalent to that of SwitzerlandAlpha Arbutin (Switzerland) and Alpha Arbutin (China) is the performance and the same standard?
Can be used together? Working because there are different mechanisms. Therefore, we cannot compare which substance is more effective.Please ask for more information Alpha Arbutin MSH White Absorb™ can they be used together or do I have to choose one? If compared, which one is more efficient?