Le bon sérum capillaire pour le cuir chevelu – ou pour les longueurs.
« Sérum capillaire » désigne deux choses bien différentes : les sérums pour le cuir chevelu, censés soutenir des cheveux qui s’affinent, et les sérums de soin pour des longueurs brillantes et souples. Nous expliquons la différence et donnons nos recommandations pour les deux.
ARBUTI Hair Salon · Mis à jour octobre 2026
Les sérums capillaires que nous recommandons
1
Cuir chevelu · notre choix
LADUTI Hair Serum
Un sérum pour femmes et hommes, en flacon de verre ambré de 30 ml avec pipette. Vous l’appliquez le soir sur le cuir chevelu, où il reste toute la nuit. Il associe AnaGain™ et Procapil™, sans minoxidil ni hormones ; Dermatest® juge sa tolérance cutanée « très bonne ».
Un seul actif (le thiocyanate), à appliquer chaque jour sur le cuir chevelu, sans rinçage. L’application est vite faite. Le fabricant cite des observations d’utilisation, mais sans groupe témoin.
Un sérum pour le cuir chevelu à base du complexe végétal MKMS24, composé entre autres, selon le fabricant, de bambou, de thym et de lentilles. Il s’applique avec l’embout spray sur le cuir chevelu, puis se masse. Nous n’avons pas retrouvé les gros pourcentages du fabricant dans des études indépendantes.
Les points forts
Texture légère avec embout spray
Approche végétale
À savoir
Chiffres publicitaires non confirmés de façon indépendante
Signé par le fabricant du célèbre sérum pour cils, pour femmes et hommes, sans hormones selon le fabricant. Le sérum s’applique avec le spray-pompe sur le cuir chevelu et ne se rince pas.
Un sérum de soin pour longueurs sèches, à appliquer le soir sur les cheveux pour un soin pendant la nuit. Le matin, les cheveux sont plus doux et se coiffent plus facilement. Il n’est pas conçu contre la chute de cheveux.
Un sérum-huile à base de trois huiles végétales, dont l’huile d’argan. Sur cheveux humides, il facilite le démêlage ; sur cheveux secs, il apporte de la brillance et discipline les frisottis. Quelques gouttes suffisent.
Un sérum pour le cuir chevelu ne doit pas être rincé. Plus il reste longtemps sur le cuir chevelu, mieux c’est – c’est pourquoi nous aimons les sérums du soir.
Preuves
Demandez s’il existe des études avec groupe témoin. Des promesses comme « jusqu’à 90 % » sans source relèvent de la publicité, pas de la preuve.
Tolérance
Si votre cuir chevelu est sensible, surveillez les parfums et l’alcool, et testez tout nouveau sérum d’abord sur une petite zone.
Poids
Les cheveux fins ne supportent que des sérums de soin légers, sur les pointes. Les cheveux épais ou crépus peuvent recevoir plus d’huile.
Silicones
Sans problème dans les sérums de soin, et souvent la raison de la brillance. Sur le cuir chevelu, ils n’ont rien à faire.
Questions fréquentes
Un sérum capillaire aide-t-il contre la chute ?
Un sérum de soin pour les longueurs, non. Un sérum pour le cuir chevelu aux actifs étudiés peut soutenir des cheveux qui s’affinent progressivement, si vous l’utilisez régulièrement pendant des mois. Les produits que nous recommandons pour cela figurent dans notre Top 10 repousse cheveux.
Peut-on utiliser un sérum capillaire tous les jours ?
Les sérums pour le cuir chevelu sont faits pour un usage quotidien. Pour les sérums de soin, après le lavage ou selon les besoins suffit généralement – sinon les cheveux s’alourdissent.
Sérum sur cheveux mouillés ou secs ?
Sur cheveux essorés à la serviette, les sérums de soin protègent avant le séchage ; sur cheveux secs, ils servent de finition contre les frisottis. Les sérums pour le cuir chevelu s’appliquent le plus souvent sur un cuir chevelu sec – suivez le mode d’emploi du fabricant.
Quelle différence entre sérum et huile capillaire ?
Les huiles capillaires sont surtout composées d’huiles végétales, les sérums de soin souvent de silicones légers avec un peu d’huile – ils gainent et lissent le cheveu. Ni l’un ni l’autre n’est fait pour le cuir chevelu. Pour en savoir plus, lisez notre article sur l’huile capillaire.
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