A member asked:

How long does psoriasis foam have to be on your scalp before you can wash your hair?

4 doctors weighed in across 2 answers

30 minutes: The foam does not leave a residue .It can be used while still wet and maybe more effective because it is left in longer.

Answered 9/28/2016

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Psoriasis: Usually the foam is applied twice daily for a 2-week course. Best way to use is to shower first and then apply to the scalp afterwards. Goal is to keep it on as long as possible.

Answered 3/17/2013

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