Clinical trials showed that the bacterial extract Vitreoscilla filiformis is effective against acne and seborrhoeic dermatitis and promotes moisturization of the skin (studies in Seoul, Korea and in Nice, France and patent FR-2,283, 223) and has been shown to be beneficial for sensitive skin (clinical trial by Dr Desruelle F in Nice, France) Moreover, a randomized, double-blind, placebo-controlled trial with a formulated 5% extract of Vitreoscilla filiformis on symmetric active lesions of AD according to a split-body design was performed with Prof. J. F. Nicolas in Lyon, France.