This is a raw developer meant to be mixed with a Sparks color product, not used alone. At 10 volume it's the gentlest option, so it's suited to services that need minimal lift — toning, gray blending, refreshing demi-permanent color — done by a stylist or experienced colorist working within the Sparks system specifically, since its mixing ratios are matched to Sparks products rather than other brands.

It's worth choosing specifically if you're already working within the Sparks color line, since Sparks designs this 10 volume developer to pair with its own Powder Lightener for a gentler one-step lightening option, as well as with its permanent and demi-permanent creme colors for toning and gray coverage — rather than being a generic peroxide meant to be paired with any brand of color.

Always mix with the specific Sparks product intended — Sparks Powder Lightener, or Sparks permanent or demi-permanent creme color — at the ratio that product specifies, since ratios are matched to the Sparks system. Patch test at least 48 hours before each use. Apply evenly with gloves and protective clothing, process for the time given in the paired Sparks product's instructions, then rinse thoroughly.

Pros:

• Gentlest volume in the Sparks developer range, suited to low-damage toning and gray-blending work
• Formulated to double as an extra-lift booster when paired specifically with Sparks Powder Lightener, in place of a plain clear 20 volume developer
• Stabilized cream texture designed for consistent mixing

Cons:

• Mixing ratios are matched to the Sparks color/lightener system, so results with other brands' color lines aren't guaranteed
• On its own, 10 volume provides minimal lift — it isn't a bleaching product by itself
• Standard peroxide sensitivities apply, so a patch test is still necessary before each use