Filed under Hair Colour › Developers, Montibello Under Activator is a developer from the Montibello line-up. Cream developers are mixed with colour or bleach — choose the volume the colour brand recommends.
There are 3 sizes to pick from: 15 Vol/4.5% Activator 1000ml, 25 Vol/7.5% Activator 1000ml and 35 Vol/10.5% Activator 1000ml.
At a glance
- Brand: Montibello
- Product: Under Activator
- Size: 3 sizes
- Category: Hair Colour › Developers
Good to know
- 10 vol (3%) is usually for deposit and toning; higher volumes give more lift.
- Measure accurately with scales or a measuring bottle.
- Keep the cap on and store away from heat.









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