With millions of women around the developing world thrown into self-employment but with low productivity, increasing the profitability of their businesses is highly relevant for poverty reduction and gender equity. This study evaluates the impacts of a BDS program serving female microentrepreneurs in Lima using an experimental design, that included two treatment groups: One received only general training (GT), albeit more time-intense than previous studies, and delivered by experts, while the other received in addition technical assistance (TA). Results show the existence of room for efficiency gains and growth, as all treated showed increased sales revenues and self-reported adoption of recommended business practices. Those that received only GT showed positive but not significant effects early on, but the two treatment groups showed indistinguishable growth, above 15%, two years after the end of the treatment. Low take up of the training may suggest some space to improve recruitment and delivery of treatments.