Choosing the right volume developer for bleaching hair can feel confusing. Many people struggle with picking between 10, 20, 30, or 40 volume developers. The wrong choice can damage hair or give poor results.
This blog will help readers understand exactly what volume developer for bleach. It covers the differences between each volume, when to use them, and how to avoid common mistakes.
The guide also explains common mistakes while using developer hair dye. By the end, anyone will know exactly which volume developer works best for their bleaching project and how to use it safely.
What Does a Developer Do in Hair Bleaching
A developer in hair bleaching is a hydrogen peroxide-based solution that activates the bleach. Its primary role is to open the hair cuticle, which is the outermost layer of the hair, allowing the bleach to penetrate the cortex, where the hair’s natural pigment resides.
Once inside, the developer facilitates the oxidation process, breaking down the melanin pigments that give hair its color, resulting in a lightening effect.
Different volumes of developer indicate varying concentrations of hydrogen peroxide, controlling the speed and strength of the bleach’s lifting action. Higher volumes lift color faster but increase the risk of hair damage.
Therefore, choosing the right developer volume depends on the desired lift level and the hair’s condition to minimize damage while achieving the lightening effect.
How to Choose the Right Strength of Developer?
To choose the right strength of developer, first assess your desired outcome: if you want to lift your hair color, go for a darker shade, or maintain the current one.
Generally, 10 volume is used for depositing or darkening color, 20 volume for 1–2 levels of lift and covering grey, 30 volume for 2–3 levels of lift, and 40 volume for maximum lift up to 8 levels, mainly with bleach.
Consider scalp sensitivity, hair integrity, and whether hair is virgin or previously colored, as these affect lifting power and choice of volume.
Always follow manufacturer instructions and avoid using stronger developers than needed to minimize hair damage and achieve consistent, controlled results.
Types of Volume Developer for Bleach
Developer volumes 10, 20, 30, and 40 refer to the strength of hydrogen peroxide in hair color developers, affecting how much they lift or lighten hair.
Each volume serves different purposes in the hair coloring process, from subtle color deposit to significant lightening.
1. 10 Volume Developer
A 10-volume developer contains about 3% hydrogen peroxide and offers minimal lifting power. It is primarily used for depositing color rather than lightening, making it ideal for semi-permanent or demi-permanent dyes.
This developer mildly opens the hair cuticle, allowing color molecules to penetrate without significantly altering the natural hair shade.
It improves or deepens the existing color, provides subtle shine, and is the least damaging option among developers, suitable for delicate or minimally processed hair.
Buy this 10-volume developer: Bondbar 10 Volume Creme Developer
2. 20 Volume Developer
The 20-volume developer has roughly 6% hydrogen peroxide, enabling it to lift hair color by 1 to 2 levels. It’s commonly used for permanent hair coloring and gray coverage.
It’s effective for transitioning to a lighter shade gently and is a popular choice for those seeking a moderate color change while maintaining hair health.
Buy this 20-volume developer: L’Oreal Oreor 20 Volume Creme Developer
3. 30 Volume Developer
With approximately 9% hydrogen peroxide, the 30 volume developer lifts the hair by up to 3 levels.
It is suitable for more noticeable lighting and stronger color changes, often paired with bleach for high-impact results.
This volume is recommended for hair resistant to color penetration or when lifting several shades is desired. It provides longer-lasting color and more lift. It is more aggressive than lower volumes and should be used with care to avoid damage, especially on fragile hair.
Buy this 30-volume developer: Salon Care 30 Volume Creme Developer
4. 40 Volume Developer
The 40 volume developer, containing about 12% hydrogen peroxide, offers the highest lifting power, capable of lifting hair to 4 levels.
It’s typically used for dramatic lightenings, such as going from dark brown to platinum blonde, or for strong bleaching treatments. Because of its strength, it opens the hair cuticle widely to remove deep pigments, but can also cause more damage if not used correctly.
Buy this 40-volume developer: Matrix Cream Developer 40 Volume
What Volume Developer for Bleach to Choose?
The decision depends on various factors, including hair type, condition, and the level of lightening required. The following is the answer to your question.
Assess Your Hair Condition
Evaluating the current health of your hair is essential before bleaching. Damaged or fragile hair should always use a lower volume developer to minimize further harm.
If your hair is already compromised, strong developers can cause breakage or dryness. Healthier hair can tolerate higher volumes for better lift, but always proceed with caution to avoid over-processing.
Consider Your Desired Lift Level
Different developer volumes correspond to different levels of lift. For subtle lightening (1-2 levels), a 10 or 20 volume developer is suitable.
For more significant lightening (3-4 levels), 30 volume is used, while 40 volume offers maximum lift but comes with higher damage risk and is recommended only for professional use.
Factor in Hair Type and Texture
Fine hair processes faster and is more prone to damage, so a lower volume developer (10 or 20) is advisable.
Coarse or thick hair can handle stronger volumes (30) to achieve adequate lift within a reasonable time without excessive damage. Adjusting volume based on hair texture helps maintain hair integrity.
Account for Previous Color Treatments
Virgin or untreated hair can lighten more evenly and may tolerate higher volumes. Previously colored or chemically treated hair is more vulnerable, so using a lower volume developer reduces the chance of severe damage.
Multiple sessions with a gentle developer are preferable for color-treated hair.
Time and Application Considerations
If bleaching must be done quickly or within a limited time, a higher volume developer might be necessary to achieve a timely lift.
However, beginners or those with longer application times should use lower volumes to avoid uneven lifting or damage. Proper timing and monitoring during the process are key to a safe outcome.
Common Mistakes to Avoid for Bleached Hair
Bleached hair requires special care to maintain its health and appearance, as the bleaching process can weaken and damage hair strands. Avoiding common mistakes is key to preserving softness, strength, and vibrancy.
- Using high-volume developers or over-processing hair, leads to excessive damage and breakage.
- Skipping the necessary hair preparation, such as conditioning treatments, before bleaching.
- Not performing patch and strand tests increases the risk of allergic reactions or uneven results.
- Washing hair too frequently or using harsh shampoos that strip natural oils and moisture.
- Neglecting deep conditioning and bond-building treatments to repair weakened hair.
- Excessive use of heat styling tools without heat protectants causes further dryness and damage.
- Overlapping bleach on previously lightened ends, resulting in breakage.
- DIY bleaching without professional guidance can lead to uneven color and damage.
- Failing to communicate hair history to your stylist affects bleaching outcomes
The Bottom Line
Getting the right volume developer makes all the difference in bleaching results. Higher volumes like 30 and 40 work faster but need extra care. Lower volumes like 10 and 20 are gentler but take more time.
Professional colorists recommend patience over speed. Multiple gentle sessions often give better results than one harsh treatment.
Gather your supplies, plan your process, and take your time. Great results come from careful preparation and the right techniques.
Have questions about your specific hair situation? Share your experiences in the comments below.
