L’Oreal Paris - Excellence is a Permanent Hair Colour. The only hair colour which comes with the “Complete Kit†which protects, strengthens and replenishes hair. Pro-keratin: Excellence Crème Revitalizes color. Hair feels Stronger. Ceramide: Enriched with Ceramide, a replica of hair's natural cement, leaves the hair looking Smoother and feeling Protected. Collagen: Known for its firming properties collagen-infused Excellence Crème leaves hair feeling replenished.