Look at the ingredients of both formulas to see if they can be used or which substance to use. Is there anything else to fix? Thank you. 1. Whitening formula - Di water 90% - Activated Resorcinol 1.0% - 4MSK ( Potassium Methoxysalicylate ) 3% - Glycerin . 5% - Phospholipid 1% - Jojoba Oil 25% - Glyc...
