Question: does dying your hair with hydrogen peroxide and baking soda damage it?
Answer: Hydrogen peroxide and baking soda can lighten your hair 1-2 shades in 1 treatment. When used in small amounts, 3% hydrogen peroxide and baking soda shouldn't damage your hair. However, your hair may show signs of damage if it's already been dyed or treated with chemicals, or if your hair is naturally dry.