The invention relates to the non-therapeutic cosmetic use of an extract of Agave for an improvement of the growth of the hair and / or the appearance of the hair and / or the scalp. The invention also relates to a cosmetic or dermatological composition improving the growth and / or appearance of the hair and / or scalp comprising extracts of Agave tequilana and a cosmetically and / or dermatologically acceptable vehicle, said composition comprising 0.05 to 5% by weight of said Agave tequilana extracts relative to the total weight of the composition, and said agave extract comprising fructo-oligosaccharides having a degree of polymerization of less than or equal to 10 and / or inulins having a polymerization degree of 10 to 60. The invention further relates to a device in a form selected from a pot, a bottle, a pump-bottle, a mask, a spray, said device comprising a composition of the invention, as well as a non-therapeutic cosmetic process for improving the growth and / or appearance of the hair and / or scalp, comprising an application on the hair and / or the cu Hair follower of the cosmetic composition of the invention. L'invention se rapporte à l'utilisation cosmétique non thérapeutique d'un extrait d'Agave pour une amélioration de la croissance du cheveu et/ou de l'aspect du cheveu et/ou du cuir chevelu. L'invention se rapporte également à une composition cosmétique ou dermatologique améliorant la croissance et/ou l'aspect du cheveu et/ou du cuir chevelu comprenant des extraits d'Agave tequilana et un véhicule cosmétiquement et/ou dermatologiquement acceptable, ladite composition comprenant de 0,05 à 5 % en poids desdits extraits d'Agave tequilana par rapport au poids total de la composition, et ledit extrait d'agave comprenant des fructo-oligosaccharides ayant un degré de polymérisation inférieur ou égal à 10 et/ou des inulines ayant un degré de polymérisation compris de 10 à 60. L'invention se rapporte en outre à un dispositif se pré
