Accepted for Publication: February 12, 2013.
Published Online: June 5, 2013. doi:10.1001/jamadermatol.2013.4294.
Study concept and design: Ahmed, Pandya.
Acquisition of data: Ahmed, Lopez, Perese, Vasquez.
Analysis and interpretation of data: Ahmed, Hynan, Chong, Pandya.
Drafting of the manuscript: Ahmed, Lopez, Perese, Vasquez.
Critical revision of the manuscript for important intellectual content: Ahmed, Hynan, Chong, Pandya.
Statistical analysis: Hynan.
Obtained funding: Ahmed, Chong.
Administrative, technical, and material support: Ahmed, Lopez, Perese, Vasquez, Pandya.
Study supervision: Ahmed, Perese, Chong, Pandya.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study was supported by a grant from the Skin of Color Society. Polypodium leucotomos extract capsules and placebo were donated by Industrial Farmaceutica Cantabria SA, Madrid, Spain. Sunscreen was donated by Aveeno, Johnson & Johnson Consumer Companies Inc.
Role of the Sponsors: The sponsors had no role in the design and conduct of the study; in the collection, analysis, and interpretation of data; or in the preparation, review, or approval of the manuscript.
Additional Contributions: We are indebted to Heidi Jacobe, MD, for advice regarding study design, and Mia Ashe-Randolph and Memoree Lee for administrative assistance.
Trial Registration: clinicaltrials.gov Identifier: NCT01092884.