A head of blonde hair, carefully coloured, toned and streaked, can look very attractive. It can, however, look far less attractive after a few weeks have gone by. The reason being that coloured hair, over time, can take on a distinctly yellow or brass colour. There is one very simple process that can eradicate the yellowy or brassy look. It involves applying vinegar to the hair.
How to keep that blonde look
There are a number of issues that can cause coloured hair to turn yellow or brassy. If the original hair colour is black, an attempt turn it blonde may not succeed, chiefly due to the extremes in colour change. The result can be a shade of orange. Orange-appearing hair will turn yellowy or brassy far quicker than a successful blonde dye. Washing the hair too frequently can also be problematic. Water contains iron. Iron causes oxidation, which can affect hair colour, including turning a head of blonde hair yellow- or brass-coloured.
Vinegar is comprised of water and acetic acid. It is specifically derived from the fermentation of alcohol. Although vinegar is chiefly considered a kitchen item, it can dramatically improve the appearance of affected hair. Vinegar works well on yellowy and brassy hair. It rids the hair of iron, a major cause of adverse change in follicle colour. A recommended kind of vinegar to use on coloured hair is apple cider vinegar. This is made from pressed and fermented apples, including the seeds and the skins.
Take a 4.5 litre (1 gallon) container and pour into it a tablespoon of apple cider vinegar. Fill the remainder with lukewarm water. Shake well. Then wash the hair as normal with shampoo. Do not dry the hair after rinsing. Instead, squeeze the water out of the hair until damp. Fill a small, plastic, spray-bottle with the water-vinegar mixture. Spray uniformly across the hair. Rinse after a few minutes and wash the hair with scented shampoo. This will get rid of the vinegary odour. Since vinegar is a natural product, there is no harm in repeating the process on a regular basis. Plus, making 4.5 litres (1 gallon) of the mixture ensures a plentiful supply for the weeks ahead.
When colouring hair, always leave the dye on the hair for the recommended time. Doing so will make sure the hair stays blonde for the maximum period.
Avoid washing hair too much, since this increases the iron content in the hair. Iron can speed up the process of turning hair yellowy and brassy via oxidation.