Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to bleach dark brown or black hair to platinum blonde or white [title] Check if your hair is healthy enough to withstand bleaching. [step] There is no way to avoid the serious damage to hair that this amount of bleaching incurs. Some stylists won't bleach hair that has already been color-treated or processed.

Ending1: Ask your stylist if your hair is healthy enough for bleaching. [title] Check when bleaching your hair. Ending2: However, you can always check to see that your hair is healthy enough for the bleach to penetrate the rest of your hair. [title] Use a 0 to 1 ratio of bleach and mineral and ammonia. Ending3: Check with your hairdresser in advance to avoid disaster. [title] Set aside an adequate amount of time. Ending4: The hair that is not being bleached may burn or get discolored from the bleaching process. Your bleach needs to be light blonde.

Answer format: ending1/ending2/ending3/ending4