Hiding Psoriatic Nails with Purple Nail Polish? Try Indigo.

According to a new study published in the journal Dermatology, application of indigo naturalis ointment, extracted from the leaves of indigo-bearing plants such as Baphicacanthus cusia and Polygonum tinctorium, may improve the symptoms of nail psoriasis. In the study, 28 patients with nail psoriasis applied one drop of the extract to their affected nails twice a day for 24 weeks. Researchers found that the patients Nail Psoriasis Severity decreased significantly from baseline. The investigators suggested that indigo naturalis extract could be an effective treatment for psoriatic nails.