Dr Irena Eris Centre for Science and Research The Pharmaceris brand means safe products of confirmed high efficacy. To optimize the formulae of our cosmetics we subject them to careful research at each stage of their development. It is done in the modern Dr Irena Eris Centre for Science and Research. Under the supervision of numerous specialists in various fields (among others: dermatologists, allergologists, pharmacists, biologists and molecular biologists) its laboratories carry out multidirectional research and experiments within the field of cosmetology. First of all, as the only manufacturer of cosmetics in Poland and one of the few in the world, we carry out our own in vitro research (on cultures of human skin cells). This enables observation and analysis of the effect of active substances contained in cosmetics on skin cells. The second field of research are in vivo studies (application tests) that allow us to assess the effect of products on the skin. Due to these activities, exceeding far beyond the obligatory scope, we are able to control and optimize the effects of all active ingredients, thus we may be sure of efficacy and safety of our cosmetics.