The Colour Rules:
Think skin tone
If you want a natural looking finish, you will need to consider your skin tone. As a general rule, cool skin tones suit cool colours (like blue and purple), whereas warm skin tones suit warm colours (like red and orange). These colours should form the base of any colour you like to add to your hair.
Light and natural
The secret to natural-looking hair colour is to make any changes subtly. If your after a shade that just enhances what you already have, or returns your hair to its natural tone it’s often better to stray only three shades away from your natural colour. Highlights should look sun-kissed and lowlights should add depth, texture and movement. Both options add shine.
Solid and shiny
Some colour treatments thicken the hair strand. With this in mind, if you’re after a shade that makes your hair healthy-looking then an all-over semi permanent or permanents are less damaging than permanents.
Flashes of brightness
Make solid, dark shades more interesting with lowlights. These thin stripes of muted bright shades look like filtered light and are often viewed as highlights for brunettes, but they can equally be placed through red too. The thicker the hair colour section, the more contemporary the finished look. If your hair is dark, and you want a bold bright flash of a colour that contrasts with your original shade, you’ll need to have your hair section bleached first. When the base colour is light enough, your new, bold shade will be much more vibrant and potentially last longer.
A serious statement
Colour is where you can show your individuality. If you are dark and you want to be bright and pink, you will need a full head bleach first to give yourself a light enough base colour to dye on to. You can also bleach smaller sections of hair that you colour up in different shades depending on your mood.