How does this colouring shampoo differ from permanent hair dye or a tinted conditioner?

This product is a deposit-only colouring shampoo. Unlike permanent dye, it does not contain ammonia or peroxide, so it cannot lighten hair or permanently alter the internal pigment. The colour sits on the outer layers of the hair shaft and rinses away gradually over several washes. Compared with a tinted conditioner, it contains a higher concentration of direct dyes and a foaming base that helps distribute pigment more evenly from roots to ends during the wash step. The format is designed for people who want a visible tonal shift — here a wine-toned burgundy — without the commitment, mixing, or processing time of a full dye kit. It is applied on wet hair like a shampoo, left on for the processing time indicated in the leaflet, then rinsed. Because it does not open the cuticle chemically, the result is less predictable on very porous or bleached hair, where pigment can grab more intensely. Think of it as a refresh tool between salon visits rather than a permanent colour change.