Wella Koleston Perfect 99/0 is a professional permanent cream hair color designed to create a very light blonde with added intensity and coverage—perfect for when you want maximum brightness without sacrificing depth or control.
Key Details
Shade: 99/0 = Intense Very Light Blonde / Natural
Level: 9 (very light blonde, same level as 9/0 but more pigmented)
Size: 2 oz salon tube
Coverage: Up to 100% gray coverage
Technology:
ME+ dye system for precise, true-to-tone color
Metal Purifier helps reduce damage from metal buildup
What Makes 99/0 Different
This is your high-level “double natural” shade
99/0 = double natural at level 9
Compared to 9/0:
More pigment density (less sheer)
Stronger gray coverage
Better for resistant or coarse hair
Compared to 88/0:
Brighter result (higher level)
Still maintains richness and control
Think of it as:
9/0 = clean, airy blonde
99/0 = brighter blonde with more “grip” and saturation
Why Stylists Use It
Prevents hollow, overly translucent blondes
Reliable for stubborn gray coverage at higher levels
Creates a solid, even base for toning or glossing
Delivers balanced, true-to-tone results with shine
Usage Notes (Salon Standard)
Mix ratio: 1:1 with Welloxon developer
Processing time: ~30 minutes
Lift: Up to ~5 levels depending on developer
Ideal for:
Level 7–8 hair going very light blonde
High gray % clients wanting brightness
Correcting sheer or washed-out blonde results
Color Insight (Pro Tip)
If your level 9 formulas:
Look too see-through → use 99/0 instead of 9/0
Don’t fully cover gray → add 99/0 to your mix
Great blend option:
9/0 + 99/0 = brightness + coverage balance
When to Reach for 99/0
You want a bright blonde with substance (not flat or hollow)
