Skin cancer biology and barriers to treatment: Recent applications of polymeric micro/nanostructures

•Skin cancer is a fatal public health concern rising continuously all over the world.•Several environmental and genetic risk factors are associated with cutaneous carcinogenesis.•Use of nanocarriers for targeted delivery of anticancer agents is the most advanced approach.•Polymeric structures are suitable for tumor selective delivery of drugs, genes and imaging agents.•Polymeric micro/nanostructures have successfully used for combination anticancer therapies.