Redken says dry, Schwarzkopf says towel-dried, and Fanola's own pages say nothing for its toners. What the brands actually print, what brands say water changes, where we found no published measurement, and why the pack leaflet wins.

If a toner goes in a bowl with developer, it is oxidative hair colour and needs the allergy alert test supplied with it. Here is what the two Fanola toners covered here contain, why 'ammonia-free' and 'PPD-free' don't change that, and what the evidence does and doesn't say about purple shampoo.

No Yellow Color Toner and Glow & Glossy are colour services mixed with developer; the No Yellow shampoo, mask and foam are not. Here is which is which among these five, what Fanola actually publishes for each, and which need a skin test.

The No Yellow Color Toner is ammonia-based colour, not a shampoo. Here is the ratio Fanola prints, the processing time it does not, which T-coded tubes belong to Glow & Glossy, and what lifts in the line.