Hair colorists selecting a 20-volume cream developer for permanent color services requiring moderate lift — same-level color deposit, grey coverage, or modest lightening. As with any peroxide developer, using it correctly depends on knowing the mixing ratio and processing time specified by the permanent color product it's paired with, which is professional-level knowledge rather than general consumer knowledge.

A 20-volume developer earns its place in a color kit because it sits in the middle of the strength range: strong enough to lift and cover grey convincingly, but gentler than a 30 or 40 volume developer meant for heavier lightening. It's the default choice for colorists doing standard permanent color services — same-level color changes, grey blending, or a modest lift — where the priority is even, predictable processing rather than maximum lightening power in a single application.

This developer is designed to be mixed with a compatible permanent crème hair color by a colorist, following that color product's own instructions.

• Select the permanent crème color and confirm the mixing ratio and developer volume that color's instructions call for.
• Combine the color and this 20-volume cream developer in a non-metallic bowl at the specified ratio, mixing to a smooth, lump-free crème.
• Apply to sectioned hair according to the service being performed (retouch, all-over color, or grey coverage).
• Process for the time specified by the color manufacturer, checking a test strand if lift or coverage is uncertain.
• Rinse, then shampoo and condition to finish the service.

Pros:

• 20-volume strength covers the most common salon needs — grey coverage and same-level or modest lift — without the higher lightening risk of a 30 or 40 volume developer
• Cream (rather than liquid) formulation stays where it's applied, reducing drips and making sectioned application more controllable
• Buffered, stabilized formula is built to process evenly rather than breaking down unpredictably during a color service

Cons:

• Only useful when mixed with a compatible permanent crème color — it has no effect on hair color used alone
• Correct results depend on following the specific color line's mixing ratio and timing, which isn't printed on this product alone
• The brand identity on this listing is inconsistent (see notes), so buyers should confirm compatibility with their intended color line rather than assume it matches a specific brand's system