Lowlights are a hair colouring technique that weaves darker shades through the hair to add depth, richness and dimension. Where highlights lift sections to a lighter tone, lowlights do the opposite, introducing deeper strands that create contrast and a natural, multi-tonal finish. They are often used to soften an over-lightened look, restore warmth to hair that has become flat or brassy, or give fine hair the appearance of more density.