[Topical therapy of the scalp].

Various hair-related diseases, systemic dermatoses as well as parasitic diseases are treated via topical application of active substances. The density of hair follicles and the consequential special conditions for diffusion require specific galenic concepts that can vary considerably depending on the respective therapeutic purpose. Both the physicochemical properties of the active ingredient and the nature of the application area must be considered when choosing an appropriate galenic base. Highly relevant here are hairiness, scarring, hyperkeratosis and exoserosis. Low-viscosity bases and foams are often preferred because of their good spreadability. Packages with nozzle tip or comb-shaped dispensers are user-friendly and can significantly enhance patient adherence to topical treatment.