How Long Can You Safely Leave Bleach In Your Hair in How To

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How Long Can You Safely Leave Bleach In Your Hair. After applying, the bleach will be left on your hair for (typically) somewhere between 15 and 30 minutes. Apply the mixture on your skin and leave it for 15 to 20 minutes.

How long should you leave bleach in your hair? Up On Beauty
How long should you leave bleach in your hair? Up On Beauty from uponbeauty.com

Aim for at least once per week to keep hair healthy. You should bleach your roots every four to six weeks. In order to create enough oxygen for oxidation to occur and effectively lighten the hair, activated bleach must have a high ph, which, as cincotta points out, is in the 9.5 to 11.5 range.

How long should you leave bleach in your hair? Up On Beauty

For darker hair, you’ll need to do this several times over, but try to leave a couple of weeks between treatments as it can damage the hair. So many women have tried this and swear that it helps to minimize the damage caused by the bleach. Aim for at least once per week to keep hair healthy. This means you’ll definitely want to wait until your new hair has completely grown out before you bleach again, generally at least 8 to 10.