Thalgo bronzing activator lotion treats and prepares the skin and makes your tan last longer thalgo bronzing activator lotion contains a melanin booster insitol derivative a natural plant substance derived from the carob tree that activates intensifies and prolongs a tan thalgo bronzing activator lotion can be used pre sun to minimise the time in the sun you need to achieve your perfect colour and can be used after sun to intensify and prolong a natural tan thalgo bronzing activator lotion