Hello, please inquire as follows: 1. Salicylic Acid EZ is there a suitable pH range in the formula? (I can't find it) 2. Xanthan Gum Base can combine water-oil, if yes, how many % of oil in the formula? (To have a little oil in the formula). ผลัดเซลล์ผิว ( BHA , Vitamin A ) is in Recipe If you want ...
