Well-performed systematic reviews should analyze as many articles as possible to provide the best evidence available. However, some reviews limit their searches only to a few numbers of databases, mainly literature in English, published in journals fundamentally edited in developed countries. The LILACS database is an underused source of trials that indexes journals mainly from Latin American and Caribbean countries. In the present study, I sought to assess whether including a LILACS search improved the quality of systematic reviews in dermatology.