What are the efficacies of squaric acid dibutylester (SADBE) and diphencyprone (DPCP) in the treatment of alopecia areata?

Updated: Aug 06, 2020
  • Author: Chantal Bolduc, MD, FRCPC; Chief Editor: Dirk M Elston, MD  more...
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Both SADBE and DPCP appear to be equally effective. Acetone-based solutions usually are preferred because they evaporate quickly, allowing patients to wear a hat or wig immediately after treatment. Quick drying also decreases the chances of dissemination to other body parts by contact.

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