One of L’Oreal’s greatest hair colour ranges, Dia Light, brings an ammonia-free, professional hair colour treatment to those with colour treated hair. It is also L’Oreal’s first tone-on-tone colour delivering illuminating shine to your hair. L’Oreal Dia Light 9.3 Demi-Permanent Hair Colour produces a Very Light Golden Blonde colour whilst emitting radiant tones with remarkably even colour which produces a highly elegant end-result.