Best Hair Developers in India: 6% 20 Vol and More

Have you ever stood in a salon supply store, staring at rows of bottles that all say "Developer" and had absolutely no idea which one to pick? You are not alone. Hair developers are one of the most confusing parts of the hair color process, especially when numbers like 6%, 20 Vol, and 30 Vol are thrown around without any explanation.

The good news? Once you understand how hair developers actually work, choosing the right one becomes easy. In this guide, we will break down everything you need to know about what a developer does, what volume to use for different hair goals, which top developers are available in India, and how to pair them with popular color lines like Loreal INOA and Majirel.

What Is a Hair Developer? (And Why Do You Need One?)

A hair developer also called an oxidant or activator is a creamy liquid mixed with hair color to make the color work. Without a developer, your hair dye simply will not penetrate the hair shaft or create a lasting result.

The active ingredient in all developers is hydrogen peroxide. When it is mixed with hair color, it opens up the outer layer of your hair (called the cuticle), allows the color pigment to enter, and then triggers the chemical reaction that develops your chosen shade.

Tip: Always mix developer and color in a non-metallic bowl. Metal can react with hydrogen peroxide and damage both the mixture and your hair.

What Does 'Volume' Mean? Understanding 6% and 20 Vol

Here is where most people get confused: the "volume" number and the percentage number mean the same thing. They are just two different ways to measure the strength of hydrogen peroxide in the developer.

So when you see "6% 20 Vol" on a bottle, it is simply confirming both measurements at once. They are identical.

When Should You Use a 20 Vol Developer?

20 Vol (6%) is the most widely used developer strength in professional salons. It strikes the perfect balance between lifting power and hair safety. Here is when 20 Vol is the right choice:

• You want to cover grey or white hair fully

• You are applying a permanent hair color at the same level as your natural shade

• You want to lift your hair color by 1 to 2 shades

• You are using an ammonia-free color like Loreal INOA

• You want long-lasting, vibrant color without excessive damage

Tip: If your client has more than 50% grey hair, stick with 20 Vol. It gives the density and coverage needed for stubborn greys without compromising hair health.

Best Hair Developers in India — Our Top 4 Picks

India's professional hair market is growing fast, and these four developers are trusted by salon professionals across the country. Each has its own strengths, and knowing those differences will help you choose the right one every time.

1. Loreal INOA Oxydant Developer 6% 20 Vol — 1000ml

Best for: Ammonia-free coloring, sensitive scalps, INOA shade range

The Loreal INOA Oxydant Developer is specifically engineered for use with the INOA color system — Loreal's flagship ammonia-free hair color range. What makes this developer unique is its Oil Delivery System (ODS). Instead of relying on ammonia to open the hair cuticle, INOA uses oil to carry color directly into the hair fiber. This means less scalp irritation, zero ammonia smell, and a gentler coloring experience overall.

This developer works at a 1:1 ratio with INOA color. It is ideal for grey coverage, tone-on-tone coloring, and clients with a sensitive scalp who react badly to traditional developers.

• Ammonia-free formula

• Oil-based delivery system — gentler on scalp and hair fiber

• Perfect 1:1 mixing ratio with all INOA shades

• Suitable for sensitive scalp clients

Tip: Never use the INOA developer with non-INOA color lines. The oil-based formula is calibrated specifically for the INOA pigment system.

2. Loreal Oreor Developer 20 Vol — 1000ml

Best for: Majirel, and multi-brand permanent color, heavy grey coverage

The Loreal Oreor Developer is Loreal's universal professional developer — a workhorse formula that works across multiple Loreal color lines including Majirel, Richesse, and Dia Color. If you are running a busy salon and need a developer that works with a wide range of colors, Oreor is your go-to.

Oreor provides a denser, more opaque result compared to oil-based developers, which makes it especially effective for clients with resistant grey hair. Its consistent viscosity ensures even mixing and smooth application every time.

• Compatible with Majirel, Richesse, Dia Color, and most Loreal professional lines

• Dense formula for maximum grey coverage

• Consistent viscosity for even application

• Great value for high-volume salon use

Tip: For Majirel colors, mix Oreor at a 1:1.5 ratio (1 part color to 1.5 parts developer) for optimal consistency and coverage.

3. Schwarzkopf IGORA 6% Oil Developer 20 Vol — 1000ml (MRP ₹880)

Best for: Fine or damaged hair, IGORA Royal shades, gentle coloring

Schwarzkopf's IGORA Oil Developer uses an oil-enriched base that cushions the hair during the chemical process, reducing brittleness, breakage, and scalp sensitivity. It is the recommended developer for use with Schwarzkopf's IGORA Royal color range, one of the most respected professional color lines in the world.

At MRP ₹880 for 1000ml, it is competitively priced for a professional-grade oil developer. If your clients have fine, bleached, or chemically processed hair, this developer offers the gentlest lift while maintaining excellent color accuracy.

• Oil-enriched formula for minimal hair damage

• Ideal pairing with Schwarzkopf IGORA Royal shades

• Great for fine, bleached, or over-processed hair

• MRP ₹880 good value for a premium oil developer

Tip: When using IGORA developer with IGORA Royal, always follow the 1:1 mixing ratio and process for the full recommended development time for vibrant, even results.

4. Matrix Oxydant 20 Vol — 1000ml

Best for: High-volume salon use, SoColor and Color Sync, budget-conscious professionals

Matrix Oxydant is the reliable, budget-friendly choice for salons that go through large quantities of developer every month. It is formulated to work with Matrix's SoColor and Color Sync ranges, delivering consistent results across a wide range of natural levels and target shades.

For blending greys, achieving natural-looking permanent color, and high-volume color services, it delivers exactly what you need without overcomplicating things.

• Economical choice for busy salons

• Compatible with Matrix SoColor and Color Sync

• Consistent viscosity and reliable processing time

• Best for standard, healthy hair types

How to Use a 20 Vol Developer — Step by Step

1. Do a patch test 48 hours before coloring. Apply a small amount of mixed color and developer behind the ear. If you notice itching, redness, or swelling, do not proceed.

2. Measure your color and developer carefully. Always use the correct ratio (1:1 or 1:1.5 depending on the brand).

3. Mix in a non-metallic bowl until the mixture is smooth and creamy with no streaks.

4. Apply to dry or towel-dried hair using a tint brush, starting from the roots.

5. Process for the recommended time (usually 30–35 minutes). Do not exceed the time over-processing weakens the hair.

6. Rinse thoroughly with lukewarm water. Follow with the brand's recommended post-color treatment.

Safety Tips and Storage Guide for Hair Developers

Hair developer is a chemical product. Treating it with care protects both you and your clients.

Safety Tips:

• Always wear gloves when handling developer prolonged skin contact can cause irritation

• Never apply developer directly to the scalp without mixing it with hair color first

• Keep developers away from the eyes. If contact occurs, rinse immediately with clean water

• Do a patch test before every full color service, especially on new clients

• Do not use developer on recently bleached or chemically treated hair without a strand test first

Correct Storage:

• Store in a cool, dry place away from direct sunlight heat speeds up oxidation

• Once opened, use within 6 months for best results

• Always keep the cap tightly closed. Air exposure breaks down hydrogen peroxide

• If the developer has become watery or smells off, it has expired discard it

• Never store developers in a metal container. Use only plastic or glass

Tip: Write the date on your developer bottle with a marker when you first open it. This makes it easy to track shelf life in a busy salon.

Conclusion

• Use Loreal INOA Oxydant 6% 20 Vol for INOA colors or clients with scalp sensitivity

• Use Loreal Oreor 20 Vol for Majirel colors, heavy grey coverage, and multi-brand compatibility

• Use Schwarzkopf IGORA Oil Developer 20 Vol with IGORA Royal shades and for fine or damaged hair

• Use Matrix Oxydant 20 Vol for SoColor and Color Sync ranges when cost efficiency matters

All four developers sit at the 20 Vol / 6% sweet spot, the most versatile strength in professional hair coloring. Master your mixing ratios, follow the safety guidelines, and store your developer properly, and you will always get consistent, beautiful results.

FAQs

1. Is 6% developer the same as 20 Vol?

Yes. 6% hydrogen peroxide and 20 Vol mean exactly the same thing. They are two different units for measuring the same strength.

2. Can I use Loreal INOA developer with Majirel? 

It is not recommended. The INOA Oxydant is oil-based and calibrated for the INOA system. For Majirel, use the Loreal Oreor Developer.

3. How long does an open developer last? 

An opened bottle is best used within 6 months. After that, the hydrogen peroxide breaks down and your color results become less predictable.

4.Which developer is best for covering grey hair? 

20 Vol (6%) is the gold standard for grey coverage. For resistant greys, Loreal Oreor 20 Vol is especially effective due to its dense formula.

5. Can I use a 20 Vol developer at home? 

Yes, but with caution. Always do a patch test, follow the mixing ratio on the pack, and never leave the color on longer than instructed