Won't do anything for psoriasis.
My husband likes Selsun Blue, the one with the green cap.(he has psoriasis).
The T-Sal types with salicylic acid can burn the eyes if you are not careful.
Salicylic acid is different from methyl salicylate. Salicyclic acid is topical and not appreciably absorbed.
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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