1. Choose the desired shade. Redken Chromatics offers a wide range of shades, from natural to vibrant. Decide which shade will best suit your client's hair color and skin tone.

2. Select the appropriate developer. Redken Chromatics uses a 10-volume developer for most applications. However, a 20-volume developer can be used for resistant gray hair or for lightening hair by up to two levels.

3. Mix the color and developer. Use a ratio of 1:1 for most applications. However, a ratio of 1:2 can be used for resistant gray hair or for lightening hair by more than two levels.

4. Apply the color to the hair. Start by applying the color to the roots, then work your way through the mid-lengths and ends. Be sure to saturate the hair evenly.

5. Process the color. The processing time will vary depending on the desired results. For most applications, process the color for 30-45 minutes.

6. Rinse the color from the hair. Rinse the color thoroughly with warm water until the water runs clear.

7. Condition the hair. Apply a conditioner to the hair and leave it in for 5-10 minutes, which will help to restore the hair's moisture balance and prevent damage.

Here are some additional tips for mixing Redken Chromatics:

* Use a tint bowl and brush to mix the color and developer. This will help to ensure even mixing.

* Apply the color to dry hair. This will help the color to penetrate the hair shaft more effectively.

* Wear a tint brush and gloves to protect your skin from the color.

Redken Chromatics is a professional hair color product that should only be used by licensed hairdressers.