Resolution of zosteriform keratosis follicularis (Darier's disease) was achieved by application of 0.1% vitamin A acid in propylene glycol/ethyl alcohol twice daily for two weeks. The patient has remained free of disease for over 12 months.
Goette DK. Zosteriform Keratosis Follicularis Cleared With Topically Applied Vitamin A Acid. Arch Dermatol. 1973;107(1):113-114. doi:10.1001/archderm.1973.01620160081026