Stephen Knoll Color Couture Refresher Color Treatment 004 Sapphire Ash Trial

A lightweight color-refreshing serum from Kose’s Stephen Knoll line that evens tone and boosts shine without weighing hair down. Smooth, fast-absorbing texture suits color-treated and chemically processed hair. Fragrance-free and designed for quick salon-style touch-ups, this trial-sized treatment works well for those seeking subtle cool ash tones and easy at-home maintenance.