My friend and I are doing a science fair project
And our teacher required us to interview someone on background information
These are our questions if you answer them for us thank you!

1. In your experience, what hair color reacted best to bleaching solution?

2. How can you tell the difference between damaged and healthy hair?

3. What’s the range of the percentages of the hydrogen peroxide that people usually use to bleach hair?

4. What shampoo brand would you recommend to use before bleaching hair to get the best result?

5. Does ethnicity of hair affect the result of bleaching hair?

6. How much harder is it for a person with darker hair to get the same result as a person with lighter hair?

7. Does the type of shampoo affect the process of bleaching?

8. When do you think the trend of bleaching hair began?