Use clarifying shampoo that does not contain any dyes. If you have very long hair and crushed a higher number of Vitamin C tablets, you may need to use 5 to 6 tablespoons (74 to 89 ml) of shampoo. Combine the crushed tablets and the shampoo with a spoon until it forms a thick paste that has the consistency of glue. Use a spray bottle filled with warm water to wet your hair until it is damp to the touch, but not soaking wet. Apply the paste to your hair with clean fingers, massaging it in from root to tip. Make sure you cover your entire head with the paste.  If you have a lot of hair or long hair, you may need to apply the paste in sections to ensure every strand is covered. Just part your hair into 4-8 sections before beginning. Do at least 1 coat of the paste on your entire head so your hair is well covered. This will give the Vitamin C paste enough time to absorb into your hair. You can also sit under a hooded dryer or direct heat from a blow dryer at your hair to speed up the process.
امزجي الأقراص المطحونة مع 3 إلى 4 ملاعق كبيرة (45 إلى 60 ملل) من الشامبو في وعاء. بللي شعرك بالماء وضعي عليه العجينة. ضعي قبعة استحمام على شعرك واتركيه لمدة ساعتين على الأقل.