* arbutin is easy to decompose in the acidic environment, pay attention to cream emulsion system of pH control in 5-7;
* It will be a small amount of water at 50 DEG C arbutin cream emulsion to be dissolved, after the completion of 50 deg.c;
* Addition of antioxidant system to prevent discoloration of cosmetics.
* This cream emulsion is completed, to 50 DEG C is added with a small amount of water dissolved NaHSO3 and Na2SO3 (recommended the addition amount of 0.3-0.4%);
* The natural plant oil. Adding oleic acid and linoleic acid, arbutin can promote synergistic effect; the addition of 0.8 -1.0%. The cosmetic system in azone, can promote the absorption of arbutin, while preventing the precipitation of arbutin on the skin.