The invention concerns pharmaceutical compositions with wound healing or anti-complementary activity, and their uses, said compositions comprising. The method comprises providing a feedstock comprising fatty acids andor fatty acid esters with hydrocarbon chain length below C23 into a reaction zone in which ketonisation is conducted in the presence of a hydrotreatment catalyst under hydrogen pressure. The window allows optical access to the active face of the die, including to optical sensors thereon. Bidirectional pipes may also be supported. The image display unit is configured to display the display image on the see-through display. A check valve is disposed in the orifice for allowing one-way flow of oil from the reservoir chamber to the high pressure chamber.