Hair mousse samfuri ne na salo wanda ake amfani dashi don ƙara ƙara, riƙewa, da laushi ga gashi. Yawanci yana zuwa a cikin nau'in kumfa ko kirim kuma ana shafa shi ga danshi gashi kafin a yi salo. An tsara samfurin don taimakawa gashi ya riƙe siffarsa da ƙarar sa yayin da yake samar da sassaucin ra'ayi wanda ke ba da izinin motsi na halitta. Ana iya amfani da mousse na gashi akan kowane nau'in gashi, amma ya shahara musamman a tsakanin masu laushi ko bakin ciki waɗanda ke neman ƙara jiki da cikawa ga salon su.