Goldwell Topchic organizes shades as level + reflect letter:
- Level (1-10): Color depth. 1 = black, 10 = lightest blonde.
- N = Natural
- A = Ash
- G = Gold
- K = Copper (from German Kupfer)
- R = Red
- V = Violet
Topchic is high-intensity permanent color: deposits pure color, lifts, and offers full gray coverage. Goldwell is the German reference brand in high-end salons.
Note: Goldwell's K comes from the German word Kupfer (copper). In other brands like Matrix, copper is designated with C.