Accurate prescription is particularly important for topical steroids .
A fingertip unit describes the amount of cream squeezed out of its tube onto the end of the finger as shown. An adult female applies a cream once daily to both arms. A 30 g tube should last her two weeks. An adult male applies a cream once daily to both feet and both hands. A baby has a cream applied twice daily to the entire body, i.e. about 10 g daily.