What kind of developer should I use for toning? I have bleached hair (about level 9 - 10) and I bought Wella Koleston 10/16 pernament dye. Is 20vol too much? - Quora
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Wella Koleston Perfect Permanent Creme Hair Color - 10 16 Lightest Blonde-Ash Violet by Wella for Unisex - 2 oz Hair Color 70018013521 0070018013521 - Beauty, Hair Care - Jomashop
Koleston Perfect 10/16 Lightest Blonde/Ash Violet Permanent 10/16 · Wella Professionals | Wellastore
Color Touch 9/16 Very Light Blonde/Ash Violet Demi-Permanent 9/16 · Wella Professionals | Wellastore
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