Hair developer, also known as oxidant, is a crucial element in the hair coloring process. This product activates the hair dye, ensuring an even and lasting coverage. In this article, we will explore what a developer is, its types, applications, and recommendations for selection and use.
What is Hair Developer?
A developer is a chemical substance, usually based on hydrogen peroxide, that reacts with hair dye, helping it penetrate the hair structure. The primary function of the developer is to activate the colorants, allowing the hair to achieve the desired shade. Developers typically come in various concentrations, usually ranging from 3% to 12%, which influences the coloring result.
Types of Developers
- 3% (10 vol.): This developer is suitable for lightening or changing color by 1-2 shades. It is often used for toning.
- 6% (20 vol.): The most versatile option, allowing color changes of 2-3 shades. It is commonly used for most coloring procedures.
- 9% (30 vol.): Used for more noticeable lightening or changing color by 3-4 shades. This developer can cause more damage to the hair, so it should be used with caution.
- 12% (40 vol.): This is the strongest option, enabling lightening by 4-5 shades. It should only be used by professionals as it can significantly damage the hair.
How to Choose a Developer
When selecting a developer, consider several factors:
- Hair Type: Fine and damaged hair requires a lower concentration of developer. Thick or coarse hair can tolerate a higher concentration.
- Desired Result: Determine whether you need lightening or a dramatic color change and choose the developer accordingly.
- Coloring: For toning, a 3% developer is typically used.
Recommendations for Use
- Allergy Test: Always conduct an allergy test 48 hours before using the developer. Apply a small amount to the skin and check for a reaction.
- Use in Correct Ratio: Follow the manufacturer’s instructions regarding the ratio of developer to dye. Incorrect ratios can affect the result.
- Application: Apply the developer evenly throughout the hair length, avoiding the roots if only coloring the tips.
- Processing Time: Adhere to the processing time indicated on the packaging. Do not exceed it to avoid damaging the hair.
Hair developer is an essential component of the coloring process that can significantly affect the outcome. Choosing the right developer and following usage guidelines will help you achieve your desired color while maintaining hair health. If in doubt, it is best to consult a professional.
