68
Participants
Start Date
September 30, 2012
Primary Completion Date
October 31, 2013
Study Completion Date
November 30, 2013
290-400 nm sunscreen
A broad UV spectrum sunscreen will be applied every 3 hours for 12 weeks. The affected surface will be covered with a 2 mg/cm\^2 layer of the product as indicated on the affected areas of the face.
290-800 nm sunscreen
A UV-visible light spectrum sunscreen will be applied every 3 hours for 12 weeks. The affected surface will be covered with a 2 mg/cm\^2 layer of the product as indicated on the affected areas of the face.
"Dermatology Department. Hospital Central Dr. Ignacio Morones Prieto", San Luis Potosí City
"Hospital Central Dr. Ignacio Morones Prieto"
OTHER
Universidad Autonoma de San Luis Potosí
OTHER