All Nutrient Developer & Lighteners Keratint Color-Glaze Developer is a professional-grade 20 volume formula designed to lift and lighten hair while maintaining its integrity. This 33.8 fl.oz bottle delivers consistent, reliable results for color correction and lightening applications. Enriched with nourishing ingredients, it works seamlessly with Keratint Color-Glaze systems to create vibrant, dimensional color while keeping hair healthy and conditioned. Perfect for salon professionals seeking superior performance and lasting color vibrancy in every application.