According to board-certified dermatologist Dr. Nazanin Saedi, “A bleach burn is a chemical burn on your scalp caused by hair bleach. Typically, a bleach burn is a first-degree burn that affects

Yes, you can absolutely bleach box-dyed hair, but you have to go about it carefully. Bleaching box-dyed hair can be a gamble. You may get odd and unexpected results if you have repeatedly dyed over colors. It is difficult to go from dark to light, so if you expect to go from black box dye to platinum blonde in one session, you’ll likely be 1. Pre-Bleach Treatment. If you have curly hair, it’s important to pre-bleach it before you bleach it. This will help to lighten the hair and make it easier to bleach. To do this, simply mix hydrogen peroxide with water in a 1:1 ratio. Then, apply it to your hair and let it sit for 30 minutes. 2.
By Sophie Saint Thomas. "Bleach interacts with pigment in the hair in a chemical process called oxidation. This causes the release of the pigment, explaining how it lifts hair color," says New
Step 1: Using a measuring cup, add two parts of hydrogen peroxide (the volume is up to you; 10 volumes are ideal for weaker hair and 20 volumes for healthy hair) to one part of powder bleach, in a bowl. Step 2: Add two parts of shampoo to the same bowl. Mix well. Step 3: Divide your wet hair into sections.
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how to bleach my hair