A method of manufacturing a series of capsules (1A) comprising a core (3), and a gelled envelope (5) completely encapsulating the core and comprising at least two external phases (5A, 5B), the gelled envelope having a surface external device comprising at least two distinct portions (7A, 7B) formed respectively by the two external phases, comprising the following steps: conveying a first stream (F1) intended to form the core, and a second stream (F2) at least the two external phases intended to form the gelled envelope, each external phase containing a liquid polyelectrolyte suitable for gelling, at least one of the two external phases comprising a coloring agent, the second flux surrounding the first flux around the an axis (D2)； - Successive formation of a plurality of liquid bodies (57) comprising a drop (107), and a film coating (109) coating the drop and having the two outer phases, the film having on its outer surface at least two portions (109A , 109B) formed by the two external phases； and - immersing each liquid body in a gelling solution (100) able to react with the polyelectrolyte of each of the two external phases, and recovering the plurality of capsules. Series of capsules, cosmetic composition containing the capsules and cosmetic treatment using the composition.Procédé de fabrication d'une série de capsules (1A) comprenant un cœur (3), et une enveloppe gélifiée (5) encapsulant totalement le cœur et comportant au moins deux phases externes (5A, 5B), l'enveloppe gélifiée ayant une surface externe comportant au moins deux portions (7A, 7B) distinctes formées respectivement par les deux phases externes, comprenant les étapes suivantes : - convoyage d'un premier flux (F1) destiné à former le cœur, et d'un deuxième flux (F2) d'au moins les deux phases externes destinées à former l'enveloppe gélifiée, chaque phase externe contenant un polyélectrolyte liquide propre à gélifier, au moins l'une des deux phases externes comportant un agent colorant, le deuxième
