Typically, cool skin tones match cooler hair colours, like a platinum shade, cool brown, or ashy hue. Warm skin tones, on the other hand, are complemented by warmer hair colours like golden brown or blonde, bronze, and copper-red hair dyes.

Timing. Timing is 30 minutes for standard color application; 45 minutes for maximum gray coverage and for high-lift shades. Typically, with permanent color, the first 15 minutes provide time for the peroxide and ammonia to open the cuticle and penetrate into the cortex to lighten natural pigment.

It is generally recommended to dye clean, dry hair rather than oily hair. When your hair is oily, the natural oils on your scalp can act as a barrier, making it more difficult for the hair dye to penetrate evenly and effectively. This can result in patchy or uneven color results.

Start from the back two sections of hair, clipping them back up as you go. Doing it this way means that the dye will be on the back sections longer, which helps your dye job look more natural since the back of your hair tends to be naturally darker than the front.