When used in conjunction with hair dye, the developer acts as an oxidising agent. Hydrogen peroxide is commonly used as a developer in permanent haircolor. Peroxide acts as an astringent, allowing the dye to enter through the cuticle. Depending on the peroxide intensity, it can also lighten the hair’s color by dispersing the current color.
How can you compare 30 vs 40 developers? Bleach is used in a 2 to 1 ratio with 30 volume developer. If you utilise two developer units, you’ll need one bleach unit for every two developer units. A 40 volume developer will have the same proportions. I wouldn’t advocate using a 40 volume developer if you’ve never colored your hair before.
The oxidising potential of the peroxide developer is indicated by its ‘volume.’ Developers with a volume of 10, 20, or 30 are commonly used in haircolor formulae nowadays.
30 vs 40 developer
| Features | 30 developer | 40 developer |
| Peroxide percentage | 9% | 12% |
| Used with | Lightener | Lighten Re or high-lift blondes |
| Color potential | Strong | Stronger |
| Lift | Medium | High |
Do you know what a hair developer does?
Understand what hair developer performs before you can figure out the best volume developer for you. Without activators, hair dye would not affect the hair follicles. The developer aids in the penetration and long-term retention of the color in the hair. The hydrogen peroxide developer raises the hair’s cuticle layer, and the amount of cuticle lift that occurs is dependent on the strength of the activator.
The amount of hydrogen peroxide in hair reflects its oxidative potential. The developer in most bleach and hair color solutions ranges from 10 to 40. Depending on the intensity of the developer, it might also raise the hair color level a little bit. Because of this, even if you use a color removal solution to remove your permanent hair color, the hair underneath will still be lighter than your virgin hair color.
30 vs 40 developers: When to use?
30 Volume Developer
When coloring using a 30 volume developer, you can lighten the hair by two or three levels while also getting more pigment into the hair shaft. A 30 volume developer is a good choice if you want a lighter and longer-lasting color, but your hair isn’t severely damaged. You may need a higher volume developer, such as 30 volume if your hair has a low porosity, which is more resistant to color.
To lighten light to medium brown hair, a 30 volume developer can be used in combination with bleach.
40 Volume Developer
High-lift hair color can be used to generate highlights without the use of bleach. For this reason, you should use it. The 40 volume developer may also be necessary if you are bleaching dark brown or black hair, but bear in mind that this is the most destructive to hair. Those with sensitive scalps should avoid this product because it contains 12 percent peroxide, which can cause burns.
Doing multiple rounds of bleaching with a 30 or even 20 volume developer, and slathering your hair with conditioner, is the best and safest way to lighten your hair at home.
30 vs 40 developers: shades development
30 volume developer
Using a 2:1 ratio is always recommended. The developer’s volume solely affects how many shades lighter your hair will be after using it. When used on dark hair, a 30 volume developer will lighten it by up to three shades. Apply the mixture to your hair and let it sit for up to 20 minutes before rinsing it out. The longer you keep it in your hair, the more likely it is that it may permanently damage your hair and necessitate a haircut.
40 volume developer
Like always, the ratio of developer to bleach is 2 to 1. A 40 volume developer will lighten your hair up to 4 shades. You should use it on dark hair to get a very light color.
If you use this developer, you need to be very conscious to your hair turns as the chemicals function. The maximum amount of time you should leave the chemicals in your hair is 20 minutes, but that doesn’t mean you need to leave it the whole time. You should check on your hair color every 5 minutes.
How to choose a developer based on hair type?
The color outcome might be influenced by the type of hair you have as well. The dyeing* process affects different types of hair in different ways. Fine hair, for example, can easily be lightened and colored more quickly because of the increased permeability of the hair strand. Having said that, thicker hair may hold up better to the coloring process. Follow these guidelines:
Fine hair
- It’s easy to change the color of this hair from blonde to brunette or vice versa.
- The darker your hair color, the more likely it is that it will be too dark. Go with a softer shade of hair color.
- Lower volume developers can be used than the suggested ones.
- Normally curly hair
- The color reaction in this hair is perfectly natural.
- Use the developer’s recommended volume.
Heavier hair
- To achieve a more natural-looking color change, you’ll have to work more on this hair.
- When dyeing your hair a darker color, you may notice that the final product is a little lighter.
- You can use a developer with a larger volume than the one specified.
- Gray and white hair, on the other hand, is quite hardy.
Tips and tricks
Frequently Asked Questions
How Much Bleach Do I Need?
If you want to lighten your hair by two to three shades, you should use a 30 volume developer. If you use a 40 volume developer incorrectly, you could permanently alter the color of your hair. With the help of a colorist, only use 40 volume developers
Which Bleach Is More Powerful: 30 or 40 volumes?
40 volume developers are more powerful than 30 volume developers, according to this study. The greater the number, the more powerful the developer is. 30 volume developer, for example, has a higher potency than a 20 volume developer. 40 volume developers, on the other hand, should only be used by a colorist and not by a home stylist. With no professional assistance, it can easily harm your hair and scalp (no matter what type of hair you have).
Do 30 Volume Developers Work For Lightening Hair?
When used with 30 volume developers, a peroxide concentration of 9 percent lightens hair by two to three levels. If you don’t want your hair to go lighter than a few shades on the color wheel, this is a fantastic option for you.
Using 30 Developer, how much bleach do you use?
Regardless of the volume of developers you use, you should always use a 2:1 ratio of developer and bleach in your hair lightener. Mixing bleach and developer in a 2:1 ratio is required for a 30 volume developer, for example. When working with a professional hair colorist, you should always adhere to their directions, but there are two exceptions to this rule.
Is using 40 Developer safe for hair?
One of the strongest developers is the 40-volume developer. Blondes, especially those with high-lift colors, will benefit from this product because it will lighten their hair by four shades. If you want a medium to dark blonde color, try using a 40 volume developer.
How long can I leave 40 vol bleach in my hair before washing it out?
Leaving bleach on your hair for too long might cause damage. There’s a common belief that the longer you leave the bleach on, the better it works. Bleaching your hair for more than 30 minutes is not recommended. If you leave it on for any longer, you run the danger of breaking the strands and other problems.
What will happen if you leave the developer in your hair for too long? ‘
Generally speaking, you should not leave 20 volumes of bleach in your hair for more than 30 minutes at a time. In the majority of cases, doing so will result in substantial breakage and other harm.
Conclusion about 30 vs 40 developer
Using our developer will help you get the most out of your color because our color is smoother in texture. Using a thicker developer will result in a thicker color with less cuticle penetration.
Finally, follow the manufacturer’s directions to accurately measure the developer needed. As a result of this, a precise amount of product is needed to provide proper coverage of grey hair, longer color life, and accurate lighting. Even if you are an expert colorist, you should never make a guess. No of how many times they’ve baked a cake, a baker will always weigh the flour before adding it to the batter. I hope this article will help you to compare 30 vs 40 developer.
