Why doesn Xandrox 12.5% Lotion® contain retinoic acid?
A. Retinoic acid is a very powerful drug with some undesirable side effects. Some patients cannot tolerate its use or would rather not put up with the undesirable side effects. The absorption enhancer in the Xandrox 12.5%Lotion® makes the addition of retinoic acid unnecessary. Retinoic acid should only be applied at night. The absence of retinoic acid in Xandrox 12.5% Lotion® allows it to be used at any time of the day or night..