Wella Koleston Perfect 33/0 Intense Dark Brown/Natural is part of the Pure Naturals Intense series, designed to deliver extra depth and stronger pigment saturation compared to standard natural shades like 3/0.

What it is

• Shade: 33/0 (Intense Dark Brown / Natural)
• Type: Permanent creme hair color (2 oz)
• Tone family: Neutral with enhanced intensity
• Level: Dark brown with boosted depth and richness

Key features

• Up to 100% gray coverage with dense, even results
• ME+ dye technology → helps reduce risk of developing new dye allergies
• Metal Purifier technology → helps protect hair from metal-induced damage
• Richer, more saturated color payoff vs standard naturals (like 3/0)
• Long-lasting, fade-resistant results with high shine and depth

How pros use 33/0

This is your “deeper brunette booster”:

• For strong gray coverage when standard naturals feel too sheer
• Creating extra-rich, dense dark brown results
• Lowlighting or adding depth to medium/light brunettes
• Enhancing formulas when you want more saturation and longevity

Formulation basics

• Mixing ratio: 1:1 with Welloxon developer
• Developer choice:
  • 10 Vol → deposit + maximum depth
  • 20 Vol → gray coverage + slight lift
• Lift: Minimal (primarily deposit-focused shade)

Pro insight

33/0 is essentially 3/0 turned up:

• Same neutral tone family, but stronger pigment load
• Better for resistant gray hair or stubborn coverage
• Gives a richer, more dimensional finish vs flat dark brown

Quick shade comparison

• 2/0 → darkest brown (almost black)
• 3/0 → standard dark brown
• 33/0 → intense dark brown (deeper + more saturated)
• 4/0 → softer medium brown