Hey Mamacat, I don't know if you use liquid makeup or not but I like to put Lugol's or other Iodine in mine. It gives it an ever so slight richer color and keeps the bacteria out of the bottle. My skin looks wonderful since I have been using it for about 3 months. It slowly removes any light sun spots and softens wrinkles. I don't have to even think about it since it's part of my daily routine...one less step. :)