This developer is for anyone using Wella ColorCharm permanent liquid or gel color, at home or in a salon — it's not a standalone product for people who aren't also using a ColorCharm color. It's sold at general beauty retailers rather than exclusively to licensed professionals, but because it involves mixing and timing a chemical color process, it suits someone with some prior hair-coloring experience better than a complete first-timer.

The reason to pick this over a generic developer is that it's built and tested specifically for Wella ColorCharm color, so the volume, consistency, and stability are matched to how that color line is formulated. For anyone already using ColorCharm shades, that pairing is what gives predictable lift and gray coverage, rather than guessing with a developer made for a different brand.

Mix immediately before applying color — don't prepare it in advance.

1. Mix 1 part Wella ColorCharm permanent liquid or gel color with 2 parts ColorCharm Clear Developer 20 Volume.
2. Apply to hair using the desired technique.
3. Develop for 30 minutes, up to 45 minutes if additional depth or gray coverage is needed.
4. Rinse thoroughly, then shampoo and condition.

As a developer rather than a color itself, its pros and cons mostly come down to how it's used.

Pros

• Formulated specifically to work with ColorCharm permanent color for predictable, consistent results
• Effective for gray coverage when paired with the appropriate ColorCharm shade
• Stabilized cream formula is straightforward to mix and apply with a bowl and brush

Cons

• Only formulated to pair with Wella ColorCharm color — substituting a different brand's color can give unpredictable results
• Contains hydrogen peroxide, so it can dry out or damage hair if overprocessed or used more often than recommended
• Requires accurate mixing and timing, which adds room for user error compared with a pre-mixed color kit