Numbering System in Hair Coloring

The numbering system in hair coloring is a standardized method used to identify different hair color shades and tones. This system helps cosmetologists and hairstylists select the correct color product and achieve accurate results during hair coloring services. Almost all professional hair color brands use a numbering system to represent the level and tone of a hair color.

Understanding the numbering system is very important for students in the Cosmetology trade, as it allows them to read hair color charts, mix colors correctly, and create the desired shade for the client.

Meaning of the Numbering System

In hair coloring, the numbering system usually consists of numbers separated by a dot or slash. The first number indicates the level (lightness or darkness of the color), while the second number indicates the tone (the shade or reflection of the color).

For example:

• 5.3 – Level 5 with a golden tone
• 6.1 – Level 6 with an ash tone
• 7.4 – Level 7 with a copper tone

This system helps stylists easily identify the exact shade of hair color.

Hair Color Level System

The first number in the hair color code represents the level, which indicates how light or dark the color is. Hair color levels usually range from 1 to 10.

• Level 1 – Black
• Level 2 – Very Dark Brown
• Level 3 – Dark Brown
• Level 4 – Medium Brown
• Level 5 – Light Brown
• Level 6 – Dark Blonde
• Level 7 – Medium Blonde
• Level 8 – Light Blonde
• Level 9 – Very Light Blonde
• Level 10 – Platinum Blonde

The higher the number, the lighter the hair color.

Hair Color Tone System

The number after the dot represents the tone or reflection of the hair color. Tone adds warmth or coolness to the hair shade.

Common tone numbers include:

• .0 – Natural
• .1 – Ash
• .2 – Violet
• .3 – Gold
• .4 – Copper
• .5 – Mahogany
• .6 – Red
• .7 – Matte or Green

These tones help hairstylists neutralize unwanted shades or enhance the desired color effect.

Example of Hair Color Numbering

• 4.0 – Medium Brown Natural
• 5.1 – Light Brown Ash
• 6.3 – Dark Blonde Gold
• 7.4 – Medium Blonde Copper
• 8.1 – Light Blonde Ash

By reading these numbers, cosmetologists can easily identify the shade and tone of the hair color product.

Importance of the Numbering System

• Helps identify hair color shades accurately.
• Makes color selection easier for stylists.
• Ensures consistent results during hair coloring.
• Helps mix colors correctly.
• Supports professional hair coloring techniques.

Conclusion

The numbering system is an essential part of professional hair coloring. It helps cosmetologists understand the level and tone of hair color products and choose the correct shade for clients. By learning and practicing this system, cosmetology students can achieve accurate, consistent, and professional hair coloring results.