When facial hair thickens and becomes visible, it is time to take control and make sure that any regrowth after waxing or depilation will slow and eventually stop. This is the purpose of Erodair. Created to slow hair regrowth over time, the weakening will be determined by the strength of the hair shaft. Day and night application will give the best results. With patience, the regrowth will stop and waxing will not be required.