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)
• You need strong gray coverage at a high level
• You’re building a reliable base before toning