Because dark hair commonly lightens with unwanted brassy tones, your chances of getting the exact shade of caramel highlights that you want definitely improve if you enlist the help of a licensed colorist.
Depending on how resistant your hair is to lifting, you may find you need to maintain your color at home to minimize any discoloration or brassy hues with a purple-based shampoo or brightener.
Again, licensed hairdressers know the techniques to avoid brassy, unflattering tones, and it may be well worth your while to have your brown highlights done professionally.
Although brassy tones are usually not wanted, warm golden brown colors such as caramel, toffee, and butterscotch are a beautiful choice to add interest to brunette hair.
Rather than see your blonde hair turn brassy, your red locks fade to pink, or your rich brunette simmer to a dark blonde, invest in a sun-protecting hair product.
In addition to goiter, iodine toxicity produces a brassy taste in the mouth, excessive production of saliva, and ulcers on the skin.
The intense sun and chemical treated waters can quickly change the tone of blonde hair from brilliant to brassy.
Pyrite may be prepared artificially by gently heating ferrous sulphide with sulphur, or as brassy octahedra and cubes by slowly heating an intimate mixture of ferric oxide, sulphur and salammoniac. It is insoluble in dilute acids, but dissolves in nitric acid with separation of sulphur.
It has a somewhat brassy colour, and occurs massive or as hexagonal plates; it is attracted by a magnet and is sometimes itself magnetic. The mineral is abundant in Canada, where the presence of about 5% of nickel makes it a valuable ore of this metal.
The massive mineral sometimes occurs in mammillary and botryoidal forms with a smooth brassy surface, and is then known to Cornish miners as "blistercopper-ore."