Line for dispensing and mixing products, the line having a dispenser (2,2′) dispensing one or more colours inside a container (10,10′) of a pre-dispensed base and a mixer for mixing products (3,3′); the mixer operates on the products contained inside said container. The dispenser (2,2′) and the mixer (3,3′) operate sequentially and automatically. A method includes perforation of a container (10,10′), followed by dispensing one or more colours inside said container (10,10′); a step of insertion of a lid in the hole; and a step of mixing one or more colours inside the container. The steps of perforation, dispensing, insertion of lids, and mixing are performed, respectively, through a perforater and dispenser (2,2′), a lid-inserter (21,21′), and a mixer for dispensing and mixing products that are completely closed. The steps of perforation, dispensing, insertion of lids, and mixing are performed automatically by the line (1,1′) activated externally by the final user and without any need for intervention on the part of a skilled operator.