Is acyclovir ointment ok to use

Patient: I have shingles and an taking valacyclovir orally but also have Acylovir cream for my herpes. I saw this was also good for shingles but another place said not to use creams.Is it wise to use the Acyclovir ointment ? it seems to be helping dry out the rash.

Symptoms: Shingles rash