peroxides

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  1. H

    Peroxides

    Hey can someone help me understand wella peroxide’s please.. I totally get using bleach and peroxide’s but when doing a full head colour I don’t get the difference between 1.9%, 3%, 4% (I know 6% covers grey with KP PLEASE HELPPPP :)
    • Halafihi101
    • Thread
    • peroxides wella wella illumina wella koleston wellacolour
    • Replies: 9
    • Forum: Hair
  2. A

    Peroxide levels and bleach

    Hi All, I am hoping for some help from you guys. As a 50 something year old hairdresser, i can remember using very high peroxides with bleach ,even on a couple of occasions,60vol for red hair Very different now as i tend to use 3% or 6 % only. I am currently doing some research and would like to...
    • Andie68
    • Thread
    • allergy test bleaching on scalp peroxides
    • Replies: 5
    • Forum: Hair
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