Usualy 1-2 weeks: Dandruff (seborheic dermatitis) will usually clear with selsun blue in 1-2 weeks if the case is mild. Sometimes it is more severe and will require more aggressive treatment. See your doctor or a dermatologist if the selsun blue is not helping after a couple weeks.
Answered 12/3/2019
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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