Free tool

Bleach level predictor

Select base level, developer volume and processing time. We predict what level the hair will reach and what toner you will need.

Quick reference

Underlying pigment chart

Level	Name	Underlying pigment
1	Black	Very dark red
2	Very dark brown	Dark red
3	Dark brown	Dark red
4	Medium brown	Red
5	Light brown	Red-orange
6	Dark blonde	Orange
7	Medium blonde	Orange-yellow
8	Light blonde	Yellow
9	Very light blonde	Light yellow
10	Extra light blonde	Pale yellow

Explore all levels with brand examples and reflect families in our interactive hair color level chart.

This predictor estimates the level.
Blendsor generates the complete formula.

With toner, developer, timing, and technique. For any products and each client. Free.

How hair bleaching works

The chemistry of bleaching

Bleach (powder or cream) combined with hydrogen peroxide (developer) penetrates the hair cuticle and dissolves natural melanin. Higher developer volume and longer time removes more melanin, making hair lighter. The process always follows the same pigment sequence: dark red → red → orange → yellow → pale yellow.

Underlying pigments: the key to the result

Each hair level has a predictable underlying pigment. When you bleach, that pigment becomes visible. Knowing it allows you to choose the right toner: violet for yellows, blue for oranges, green for reds. This pigment chart is the foundation of all color correction.

Factors that affect the final result

Developer volume determines the maximum lifting power, but time modulates how much of that potential is reached. Virgin hair lifts more evenly than previously treated hair. Texture also matters: fine hair processes faster than coarse hair. Always do a strand test before applying to the entire head.

We answer your questions

Frequently Asked Questions

Everything you need to know before getting started

How many levels can you lift in a single session?

Safely, 3-4 levels per session with bleach and 40vol. For more than 4 levels, it is better to split into two sessions to preserve hair integrity.

Is developer volume the only factor that determines lift?

No. The result depends on developer volume, processing time, hair condition, porosity, chemical history, and bleach quality. This tool estimates based on the main factors.

What happens if I leave bleach on longer than recommended?

After 50 minutes the developer is exhausted and the bleach stops lifting. Leaving it longer only causes damage without benefit. If you did not reach the desired level, rinse and repeat in another session.

Can I predict the residual pigment after bleaching?

Yes. Each level has a predictable underlying pigment: low levels leave red, mid levels orange, and high levels yellow. This tool shows you exactly what pigment to expect.

Is toner necessary after bleaching?

Almost always. Bleaching exposes the underlying pigment (orange, yellow). A toner with the complementary color neutralizes that tone to achieve the desired final result.

What is the difference between this predictor and Blendsor?

The predictor gives you a basic estimate based on level, volume, and time. Blendsor analyzes 70+ variables (porosity, history, hair condition, specific brand) and generates the complete formula including toner.

Have more questions?

Email us at hello@blendsor.com