pharmaceutics Article Insights from a Box–Behnken Optimization Study of Microemulsions with Salicylic Acid for Acne Therapy Maria-Cristina Anicescu 1, Cristina-Elena Dinu-Pîrvu 1, Marina-Theodora Talianu 1 , Mihaela Violeta Ghica 1,*, Valentina Anut,a 1 , Răzvan-Mihai Prisada 1, Anca ...