Hair developer

Choose the strength based on lift goals and how dramatic a result you want to achieve. In this range you’ll find gentle options around 6% (20 volume) that suit everyday coloring and work with all hair types, plus stronger lifts at 9% (30 volume) and 12% (40 volume) for more noticeable lightening. Large bottles like 1000 ml are common for ongoing use, while smaller professional bottles exist for targeted jobs. Some formulas also include milder 2.7% activators for balanced color development when you want subtle results.

The percentage/volume indicates how much oxidizing power the product carries, which drives how much the hair lightens. Six percent (20 volume) provides a gentle lift with conditioning benefits ideal for regular color and gray coverage on many hair types. Nine percent (30 volume) delivers a stronger lift for bolder shades, while twelve percent (40 volume) offers the highest lift for intense lightening. The higher the strength, the more careful you must be with processing time to avoid dryness or damage.

For home use with routine color and gray coverage, the 6% / 20 volume options are a reliable starting point, with large 1000 ml bottles available for frequent use. For fashion shades or resistant hair, 9% / 30 volume products are suited to provide stronger lift, often in professional formats. When aiming for dramatic lightening, 12% / 40 volume selections are used in professional settings but should be applied with care to minimize damage. These strengths also appear in different bottle sizes to fit your workflow.

Always patch test 48 hours before full application and ensure the developer is compatible with your chosen hair color products. The range includes formulas designed for professional systems and home use, with some products explicitly stating compatibility with most professional color and bleach products. Store developers in a cool, dry place away from sunlight, and mix only as directed by the color product’s instructions to maintain performance and minimize strand damage.

Yes, bottle sizes vary. Large 1000 ml bottles are common for ongoing home or salon use, while smaller options like 150 ml (for professional kits) or 100 ml (for personal use) provide convenience and control for beginners testing new shades. A beginner-friendly approach often starts with a standard 6%/20 volume 1000 ml option for consistency, then moves to higher strengths as needed under guidance.

Mix the developer with the chosen hair color or bleach product strictly according to the color formula’s guidelines. Apply evenly from roots to ends, work in sections for uniform coverage, and follow recommended processing times to avoid uneven development. After processing, rinse thoroughly and use a conditioning step to help restore moisture. Choosing a compatible product line helps ensure consistent results and reduces the risk of uneven color development.