Best Gloss Demi-Permanent Hair Dye of 2026

The Knight & Wilson Metallic Black offers a striking jet black metallic shade that works beautifully on light, grey, brown, white, or pre-lightened hair, giving you a bold and distinctive finish. It enhances your existing hair colour without lightening it, perfect if you want to add a chic metallic tone to greying, blonde, brunette or highlighted hair, ideal for ombres or streaks. Safe for bleached or previously coloured hair, this dye ensures long-lasting, permanent results with a caring, sulphate-free formula. Infused with shea butter and argan oil, it nourishes your hair, adding softness and a glossy shine for a radiant look.

The Metallic Indigo Hair Dye offers a unique formula that transforms your hair into a stunning dark denim blue shade, perfect for light, grey, or pre-lightened hair. This dye enhances your existing colour without lightening it, providing a chic metallic tone ideal for ombre or balayage styles. It is safe for bleached or previously coloured hair, ensuring long-lasting results with a caring formula. Enriched with shea butter and argan oil, it nourishes your hair while adding a beautiful shine for a radiant finish.