Wella Welloxon Perfect 40 Volume (12%) Developer is the strongest developer in the Welloxon range, used for maximum lift and aggressive lightening services.

What it is

• Strength: 40 Volume (12%)
• Size: 33.8 oz / 1 Liter
• Type: Professional creme developer
• Best paired with: Wella Koleston Perfect + Blondor lighteners

Key features

• Maximum lift capability for high-lift blonding and lightening services
• Creamy consistency for smooth mixing and controlled application
• Optimized for Wella color systems to deliver accurate, even results
• Great foil adhesion + easy rinse-out for efficient salon work
• Consistent, salon-quality processing with predictable results

What 40 Volume is used for

This is your maximum-lift developer:

• 3–4+ levels of lift on natural hair
• High-lift blonding (especially darker bases like level 3–6)
• Lightening resistant or coarse hair
• Used with lighteners for major lift transformations

Formulation basics

• Mixing ratio: Typically 1:1 with Koleston Perfect (or per lightener instructions)
• Lift: Up to ~3–4+ levels depending on hair type
• Best for virgin hair or strong hair types needing significant lift

Pro insight

40 Volume is your “maximum lift, maximum caution” developer:

• Fast, powerful lift—but least control over tone
• Will expose strong underlying warmth (orange/yellow)
• Requires toning or refining after lift
• Not ideal for fragile, overprocessed, or compromised hair

Quick developer breakdown

• 10 Vol (3%) → deposit only
• 20 Vol (6%) → standard lift + deposit
• 30 Vol (9%) → higher lift
• 40 Vol (12%) → maximum lift / blonding