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Sure, red is fabulous, but it's not for everyone. If you have a cool skin tone, you're meant to be showing off an ash-based hair color instead of a red one. Thankfully, hair color was designed to always have an escape route. All you need to do is neutralize the reds with the right color and you'll be rocking a new ash color in no time.
Put on the latex gloves and mix the color and 10-volume developer together in the hair color bowl while following the ratio directions for your product. Use the hair color brush to blend the two together really well and remove any nasty lumps. You want a smooth and creamy color for the best application possible.
Divide your hair into four equal sections. Do this by parting the hair from the front, middle hairline to the back, middle hairline. Now part the hair again from the tip of one ear, across the top of the head, to the tip of the other ear. Use hair clips to hold and separate the four sections.
Starting with one of the front sections, apply the ash-based hair color to 1/2-inch-wide sections at a time. The color should be applied 1 inch from the scalp to 2 inches from the ends. Repeat this application process for this and the other three sections of hair.
When you've applied the color to the mid-shaft area of all four sections, go on back and apply color to the roots and ends that you left out the first time. Now that your hair has color on it from root to tip, set a timer for 30 minutes and let that color kick the red right out of your hair.
Rinse the hair color out once the timer goes off. Use lukewarm water and keep rinsing until the water runs clear and all traces of the hair color cream is long gone. Apply some moisturizing conditioner to the hair, rinse after one minute with cool water, and go enjoy your red-free hair color.
If you only want to tame overly red hair but keep some warmth, use a hair color with a neutral base instead of an ash base. A neutral base will simply dilute the intensity of the red but keep the overall tone within the warm range.
If your hair is very porous and dry, it could absorb the hair color at an inconsistent rate. Use a porosity equalizer before applying the hair color to even out the porosity of dry areas and get a more consistent result.