Stephen Knoll Color Couture Color Treatment Trial 001 Pureonyx Black

Kose's Stephen Knoll Color Couture Pureonyx 001 is a leave-in color treatment serum that extends color vibrancy while adding shine and taming frizz. It has a lightweight, non-greasy texture suited to color-treated and chemically processed hair seeking manageability and a glossy finish. Often positioned as suitable for daily use and for those preferring lower-fragrance or vegan-friendly options.