Method for producing an extract of Anthericumfrutescens formulations for medical and cosmetic. The cold extraction and addition of natural agents give this present invention use ensuring the non-allergen youthful appearance for medical and cosmetic of the larger. The squeezed juice from the leaves of the plant Anthericumfrutescens in stable form obtained after cold extraction, then spraying and filtration, added to it a natural preservative Radish arrowroot close filtrate and sterile water, into a soothing care after bitten by mosquito. The use of the present invention can be extended in the cosmetic field, the medical field and in animals in treating or preventing irritation, an itching, inflammation or injury of the skin, scalp or mucous membrane of a subject (human and/or animal).