You want to make this right when you are going to use it. Do not make it beforehand. Make sure you have at least two hours to spare at home if you are doing this.
This isn't supposed to lighten your natural hair colour if that's what you're looking for. It may lighten it a little bit, but it's not what it's meant for. This is for removing hair dye colour. Also it works only on hair that has been dyed a darker shade, or hair that has been dyed some artificial colour. If you had dark hair and lightened it, your hair will not become dark again with this. You will want to dye your hair again with a darker colour to get your hair dark again! I know it sounds stupid... but some people just don't understand these things!
This may make your scalp itch. Try to bear it. If you can't bear it, wash it off.
You may have "vitamin water" dripping from your hair. Keep some paper towel by you while you're waiting.
I really wanted to take pictures of the whole procedure but I honestly forgot. Shame on me for my horrible memory! But really, this is so easy to do, I honestly don't think it can be messed up.
Vitamin C tablets (I used Jamieson 500mg Delicious Chewable Formula with Antioxidant Support Grape flavoured, but really, whatever Vitamin C you have at home should work.)
Shampoo (Clarifying shampoo works best, but if you don't have, use any. I used Quantum Clarifying Shampoo.)
1. Take some Vitamin C tablets and crush it up. I crushed up about 20 tablets and ended up using only half of it, so for short-medium hair, I'd say 10 is a good amount. Judge according to the length of your hair. The tablets shouldn't be too hard to crush. I put them in a plastic bag and used the bottom of a small pot that I had to crush them. If you have a hammer, that works as well. After crushing them I put it in a little container and used the handle of a wooden spoon to crush the larger pieces so I would have a finer powder. The finer you can get it, the better.
2. Place the powder in a plastic bowl.
3. Add some baking soda. I don't know how much I used exactly, I just took the box and sprinkled some on top of the Vitamin C powder, but I'm guessing 1/2 tsp. is about right.
5. Make sure your hair is damp before going on to step 4.
4. Add shampoo. I just took the shampoo and covered the powder entirely. Supposedly, it should be a 1 Vitamin C: 2 Shampoo ratio, but I really don't think it matters. Just use however much you think you would need for your hair.
5. Mix it all up. As soon as you start mixing it, a chemical reaction will occur, causing the mixture to lather and foam up.
6. Apply it to your damp hair like you would with shampoo. Lather it up and make sure all the hair is covered.
7. Pile hair on top of head and place a shower cap or a plastic bag over it.
8. Let it sit for about an hour. Use a blow dryer to heat it up if you want.
9. Rinse, rinse, rinse. And shampoo. And condition. When I was rinsing it out, my hair felt like straw! As soon as I shampooed and conditioned it though, it felt normal again.
10. Try to let your hair air dry and not heat style it, but if you have to... like I did...
11. If it did not lift all the colour, or as much as you wanted to be lifted, wait a few days or a week, or as long as you can to let your hair recover, and repeat the process. It may or may not lift all the colour, depending on how recently you coloured it and how many times you have done so.