Alpha Arbutin Usage Concentration

Based on the product information for Alpha Arbutin (including the Switzerland, China Enzymatic Synthesis, and China Crystal Form grades), the recommended usage concentration is 0.2-2%. The description specifically recommends 2% for skin whitening and states do not use more than 2.00%.

Using Alpha Arbutin at a concentration of 5% is higher than the recommended maximum level. It's important to adhere to the recommended usage rates to ensure both effectiveness and safety.

Additionally, please note that Alpha Arbutin formulations should have a pH between 3.5-6.5. Do not mix in formulations with a pH higher than 8, as this can cause Alpha Arbutin to break down into hydroquinone, which is a dangerous substance.

Regarding the price, I am unable to provide specific pricing information.