In one sentence, describe what the following article is about:

The proteins and B vitamins in beer are great for repairing damage, and a light beer can help to lighten the color of your hair. To make a paste that's nourishing and easier to apply, mix half a cup (118 g) of beer with half an avocado and mash the two together into a paste. This recipe calls for lemon and chamomile, both of which can be used alone to lighten hair. To start, pour the juice from three lemons into a bowl. Make an eight-ounce cup of chamomile tea using two bags (four grams) of tea. When the tea has cooled, strain the leaves. Add the tea to the lemon juice and add one tablespoon (0.5 ounces) of almond oil. Stir to combine. Apple cider vinegar and hydrogen peroxide, like beer and lemon juice, can be sprayed onto your hair to help lighten it. Before applying vinegar or peroxide, mix with equal parts water.  When applying either of these as a highlighter, use a cotton ball to apply the liquids to sections of hair.  Keep an eye on the peroxide, as this may have to be washed out sooner (after 15 to 20 minutes even) than some of the other products. You can also use rhubarb in the same way to lighten hair. Dice a half cup (50 grams) of rhubarb root and boil it in a pot with four cups (one quart) of water for 20 minutes. When cool, strain and apply the liquid to your hair with a cotton ball. Henna is a dye that's extracted from plants, and that produces a reddish orange effect in the hair. To mix a henna paste, take three tablespoons (45 grams) of henna powder and mix in boiling water, just enough to form a thick paste. Set the paste aside in a cool, dark place for about 12 hours. Be sure to wear gloves when applying henna, as it will dye your skin and nails as well. In a small bowl, combine the juice from one lemon with three tablespoons (45 ml) of honey, one teaspoon (5 g) of cinnamon, and one teaspoon (four capsules) of vitamin C powder to make a highlighter that will bring out reddish tones in your hair.

Summary:
Lighten your hair with beer. Brighten with a DIY conditioner. Add lighter hues with naturally acidic substances. Dye your hair with henna. Make a lightening hair mask.