Shampoo Substitute Beat an egg and massage into scalp twice each week. Rinse with vinegar water, then rinse with plain water. Leaves hair shiny and healthy. (Vinegar water - equal parts vinegar and water) If you use store shampoo Use a ratio of 2 tbsp. apple cider vinegar to 2 cups of water to make a final rinse for hair after shampoo. This counteracts the alkaline affect of commercial shampoo. Even the so called "safe ones" have this effect.