Find the developer needed when mixing a bleach powder at a ratio.
Multiplying the powder weight by the chosen ratio gives the developer, and both are added to get the batch. A consistent bleach ratio keeps the lightener creamy and even, so sections lift at the same speed.
Hair Bleach Mixing
Developer = powder x mix ratio
Developer = powder x mix ratio Multiplying the powder weight by the chosen ratio gives the developer, and both are added to get the batch.
A consistent bleach ratio keeps the lightener creamy and even, so sections lift at the same speed.
This calculator takes 3 inputs: Powder, Mix ratio, Applications. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.