Tressa Developers, Lighteners & More Color Chart
- Type
- Developers, lightener and additives
- Mix ratio
- Watercolors Lightener 1 part powder to 2 parts developer (1 scoop + 2 oz Processing Cream)
- Developer
- Colourage Liquid Developer and Tressa Processing Cream, 5, 10, 20, 30 and 40 vol
Source: manufacturer's chart, checked Oct 2026. Based on the brand's US chart, with Canada-only shades marked. Availability can vary by country.
This chart lists the Tressa developers and support products. Colourage Liquid Developer and Tressa Processing Cream each come in 5, 10, 20, 30 and 40 vol; the liquid suits bottle application and the cream suits bowl and brush. Watercolors Lightener is a lavender powder for on and off scalp lightening, mixed one part powder to two parts developer, with 20 vol recommended and no external heat. On the scalp it uses 10 or 20 vol only. PEQ Porosity Equalizer is applied before a chemical service on porous hair, and Color Excel is added to a mixed color or lightener to shorten processing.
Swatches are approximate, to help you spot the tone family. Always check the brand's printed chart.
Other1 shade
Developers, lighteners and additives
- Watercolors LightenerWatercolors Lightener (lavender powder)Lightener
- Colourage Developer 5 volColourage Liquid Developer 5 volDeveloper
- Processing Cream 5 volTressa Processing Cream 5 volDeveloper
- Colourage Developer 10 volColourage Liquid Developer 10 volDeveloper
- Processing Cream 10 volTressa Processing Cream 10 volDeveloper
- Colourage Developer 20 volColourage Liquid Developer 20 volDeveloper
- Processing Cream 20 volTressa Processing Cream 20 volDeveloper
- Colourage Developer 30 volColourage Liquid Developer 30 volDeveloper
- Processing Cream 30 volTressa Processing Cream 30 volDeveloper
- Colourage Developer 40 volColourage Liquid Developer 40 volDeveloper
- Processing Cream 40 volTressa Processing Cream 40 volDeveloper
- PEQ Porosity EqualizerTressa PEQ Porosity EqualizerAdditive
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