Elumen Thickener is an additive designed to transform the fluid texture of Goldwell Elumen Hair Color into a gel-like consistency. It prevents the color from running, bleeding, or dripping, making it ideal for freehand, balayage, and creative techniques without changing the color's intensity. Custom viscosity: adjusts liquid formulas to prevent color slipping or running. No color shift: leaves shade intensity and performance unchanged. Creative control: prevents bleeding when contrasting tones are placed next to each other. HOW TO USE Shake the bottle thoroughly before use. Add the thickener drop by drop into your Elumen color mixture. Do not exceed 10% of the total color mixture (approx. 5% is recommended for freehand work).