This is the simplest and easiest method to treat frizzy hair. The low pH level in carbonated water helps to reduce your frizz. Wash your hair with shampoo and conditioner. Then, give it a final rinse with several cups of carbonated water. The acidity in apple cider vinegar does wonders to tame frizzy hair, and gives your hair a healthy shine.  After shampooing your hair, and completely rinsing out any shampoo, pour apple cider vinegar diluted 4:1 with water into your hair, from root to tip. Let it sit for about 30 seconds and then rinse it with cool water. Proceed to condition your hair as you normally would. Repeat this treatment once a week.  For those with extremely frizzy hair, mix one cup of the apple cider vinegar with two cups water, then pour on hair and leave it in for 20 minutes. Rinse it off thoroughly with cold water, ensuring you get all the vinegar out to avoid making your hair smell of it. These ingredients will act as natural conditioners for your hair, as both avocado and olive oil have very good hydrating benefits. Avocado also has good fatty acids, as well as Vitamin E, to help tame frizziness.  Mash up an avocado in a bowl and then add a splash of olive oil to the bowl. Whip the two ingredients together. After shampooing your hair and toweling it dry, apply the avocado mask, making sure to fully cover all of your hair. Let the mask sit for 30 minutes to an hour, and then rinse it out thoroughly. Condition your hair to get rid of the avocado scent. You can also add mayonnaise to the avocado mixture as the fat content in the mayo will help to create a natural, moisturizing mask.  Use this hair mask once or twice a week to prevent dryness and to condition your hair. Eggs contain natural amino acids that are highly beneficial for revitalizing your hair follicles and smoothing down frizzy hair. They also contain enzymes that kill bacteria and get rid of unwanted oil on your scalp.  Mix one egg with a spoon full of olive oil. Leave the mask to sit for 30 minutes so the ingredients dissolve....

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Write a summary of the previous text in Vietnamese:
Xả tóc với nước khoáng có ga (carbonated water). Dùng giấm táo để xả tóc. Làm mặt nạ dưỡng tóc với quả bơ và dầu ô liu. Dùng trứng để cấp ẩm cho tóc. Sử dụng dầu tự nhiên như dầu dừa và dầu ô liu cho ngọn tóc. Thử mát xa tóc với dầu nóng hoặc dùng mặt nạ dưỡng tóc. Xả tóc với bia để dưỡng ẩm cho tóc.