This single-center study was designed to evaluate the efficacy, coverage, durability, and comparability of 2 mineral-based facial cosmetic lines: DYG and Jane Iredale.
A cosmetic artist applied makeup from one of the cosmetic lines to each half of the faces of 20 women who were blinded as to which product was used. The volunteers were then asked to go about their usual daily routines. Each face was photographed before application, immediately after application, and 7 hours after application. Each subject evaluated the makeup on both halves of her own face using a written questionnaire that assessed comfort, duration, and general satisfaction. Four evaluators who were blinded as to the type of cosmetic applied to each side viewed photographs of the subjects and used a 10-point scale to grade the durability and coverage of the cosmetic used.
The DYG product line was demonstrated to be comparable with, and in many cases better than, the Jane Iredale line in terms of duration of application and patient comfort and satisfaction. Enhanced efficacy was up to 20% higher with the DYG product line over the Jane Iredale line (P=.25). Both mineral-based cosmetic lines were well tolerated.