If I do a bleaching strand test on my hair, will it take too much time?

  • Thread starter Thread starter Rach
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Rach

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I read somewhere that bleach (or any hair dye for that matter) stops working after a while (an hour or so?).

If this is true, how can I do a hair strand test without affecting the results for when I actually bleach my hair?
 
okay... i bleach like my hair and arms, and it takes 25 minutes, mix all the stuff together, then put it on, wait 25 minutes, then shower......ANDDDD u have bleached hair!!!!
 
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