Coloring experts state: "Those who want to cover gray hair should not use 30 or 40 volume hydrogen peroxide, but only 20 volume to fix the pigment."

Original: Especialistas em coloração afirmam: “Quem quer cobrir os cabelos brancos não deve usar água oxigenada de 30 ou 40 volumes, mas apenas a de 20 volumes para fixar o pigmento.”

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Experts explain why 20-volume developer is ideal for covering gray hair and when 30 and 40 volumes can fade the color and damage the strands. The post Coloring experts state: “Those who want to cover gray hair should not use 30 or 40-volume hydrogen peroxide, but only 20-volume to fix the pigment.” appeared first on Catraca Livre.

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