Schwarzkopf Professional Igora Vibrance Developer 4% 1000ml is a professional activator designed specifically to work with Igora Vibrance demi-permanent colour for beautifully even, long-lasting tonal results. This 4% developer supports enhanced colour intensity and improved grey blending while still delivering the gentle performance expected from a demi-colour system. Its creamy consistency mixes easily and applies smoothly through the hair, helping achieve consistent saturation and reliable development from root to tip. Ideal for refreshing colour, enriching tone, correcting unwanted warmth and creating high-shine gloss finishes, Igora Vibrance Developer 4% is a salon essential for precise tonal services and polished, professional colour results. Supplied in a large 1000ml bottle, it offers excellent value and convenience for busy colour stations.