Pro-Oxide Cream Developer is a professional back-bar product for licensed hair colorists — it is not formulated, packaged, or intended for home color kits or unsupervised DIY use.

It is chosen specifically by stylists working with Redken's Color Fusion permanent color line, selecting a volume based on the service: lower volumes (10–20) for gray coverage and deposit-only work, higher volumes (30–40) when noticeable lift is needed alongside the color.

Because Redken engineers Pro-Oxide specifically to pair with Color Fusion, using it removes the guesswork a colorist would otherwise face when matching a generic developer's thickness and reactivity to a specific color line. The cream's non-drip consistency also gives more control over placement during foiling or balayage than a thinner, runnier liquid developer would.

Pro-Oxide Cream Developer is mixed with Redken Color Fusion at a 1:1 ratio, using whichever volume — 10, 20, 30, or 40 — matches the desired lift and the client's gray coverage needs. This is a professional in-salon process, not a take-home application.

• Select developer volume (10/20/30/40) based on the desired level of lift and coverage.
• Mix Color Fusion and Pro-Oxide Cream Developer in a 1:1 ratio in a bowl or applicator bottle.
• Apply using fine 1/4-inch diagonal partings, using a traditional or modern virgin application technique, and cross-check for full saturation.
• Process at room temperature for 35–45 minutes, checking color development periodically.
• Rinse thoroughly, then follow with Redken Color Extend Shampoo and Conditioner to help seal in the result.

Pros

• Cream consistency resists dripping and running during application, which matters for precise sectioned or foiled work
• Available in four volumes (10/20/30/40) so a colorist can dial in gray coverage versus lift using the same developer line
• Built as a matched system with Color Fusion, so processing time and resulting lift stay predictable when used as directed

Cons

• Cannot be safely substituted with a different brand's developer — Redken states doing so causes unpredictable results, which locks the stylist into pairing it only with Color Fusion
• Not intended for home or DIY use — there is no consumer-safe dilution or simplified instruction set, so it is not a fit for anyone outside a professional color service
• Like all peroxide developers, it loses potency once opened and exposed to air repeatedly, so it needs a tight cap and storage away from heat and light