20 developer works slower so it's easier to get an evenly bleached. If you're not wanting to be waiting around for a couple of hours then grab a 30 developer, just know you have to work faster and your hair for even color and due to it having more peroxide it is a tad more drying.
Next time, if you need to you, can always use 30 volume if you find that the 20 wasn't strong enough, but again, for most people it's plenty.
20 volume is the cutoff point for permanent hair color. So permanent color is 20 volume or higher. 20 volume lifts a MAX of two levels. 30 volume lifts a MAX of 3 levels and 40 volume lifts a maximum of 4 levels. All these developers can be used with permanent hair color.
Because 30 volume developer cannot bring effectively to lighten your hair by only itself. It just makes your hair a little lighter than your natural color hair. Hence, in order to get the full effect, 30 volume developer should be combined with bleach powder or dye powder to lighten your hair fastest.
Any time you use a 30-volume developer on hair, it will cause some level of damage. However, when applied properly on the right type and texture of hair, a 30-volume developer will be just fine.
30 Volume Developers
It is usable and can be used with a lightening scram, a powder, or permanent hair color. It is advisable to stay away from this developer if you are not a hair coloring professional because it contains high concentrations of peroxide and might cause hair damage if not used with care.
“Using different developers is key, and a HUGE pro tip to keep the red from going too dark, and old highlights from absorbing too much pigment,” explains Jill, who uses 20 volume on virgin hair, and 25 – 30 volume on previously highlighted hair. The why: Shifting developers depending on porosity is key.
One of the most common questions is: How long to leave 30 volume developer on hair? In general, it's recommended to leave it on for 15–30 minutes, depending on how much lift you're looking for. However, going over this time can cause significant damage.
Using too much 20 volume developer can lead to over-processing, which means that the hair cuticles can get damaged, leaving the hair looking dull, dry, and brittle. Plus, the color won't turn out the way you want it to, and you might even end up with a funky, uneven color that looks like a tie-dye gone wrong.
High Lift Color On Colored Hair
Color does not lift color, and at the end of the day, a high lift is just that — permanent hair color.
The standard developer for gray coverage is 20 Volume; however, 30 Volume and 40 Volume can also be used if the percentage of gray is low and additional lift is needed to achieve the desired result.
Use 30 Vol developer when the hair is very dark and when you want an ultra white blonde result. Be careful: this bleach processes very fast, especially at the root area. You will need to work fast and rinse fast.
2 parts 30 vol to 1 part distilled water will give you 20 vol.
The release of oxygen will indeed allow the hair to lighten. And 30 Vol will definitely do this to a greater extent than 20 Vol. But we don't recommend that you apply just developer to the hair. You will get an uncontrolled lift, without any re-coloration and you will end up damaging the hair.
Vol 20 in multiple rounds: If they're worried about damage, this is the safer option, though it'll take longer to lift. Vol 30 in one go: Faster lift, but riskier for hair health. Monitor closely if used.
40% developer is a very strong lift or intensity for the color , 30% developer is a medium lift for 5 shades and is strong , 20% developer is standard lift and what most people use to dye their hair . 10% developer is lowest strength developer , you use that to tone or just add a slight color difference .
Using 30 Volume Developer on Sensitive Scalp
If you have a sensitive scalp, it's especially important to be cautious when using a 30 volume developer, as higher volumes can cause irritation.
Peroxides or Developers don't 'spoil' or go bad but they can deteriorate meaning the Hydrogen Peroxide breaks down to free oxygen and water causing the product to weaken (go from 10 Vol. to 9 Vol. or less) or it can dehydrate or lose water and get more 'concentrated' (go from 20 Vol. to 22 vol. or more) However, all ...
30 Volume (9%) Developer
Although a Volume 30 developer is strong enough to cause scalp irritation in most people, it allows you to achieve a 3-4 level lift with bleach.
Hair developer is essential for achieving the desired hair color because it activates the dye and ensures it penetrates the hair shaft. By using a 20-volume developer, you can lighten your hair by 1-2 levels, making it a versatile choice for both coloring and lightening.
Depending on how much you're trying to bleach, you might need more mixture as you go, but start with 2 oz of a 30v developer and 1 oz of lightener, add the ingredients to your mixing bowl and combine them together using the painting brush until smooth.
10 Volume Developer: Best for slight color deposit or darkening natural hair. It doesn't lift, so it's not ideal if you're looking for a lighter shade. 20 Volume Developer: Ideal for one to two levels of lightening and effective for gray coverage. Great for both depositing color and subtle lightening.
40 volume developer is very strong, so it should not be left on the hair for too long. Typically, you should leave it on for no more than 45 minutes. Over-processing can lead to hair damage, breakage, or unwanted brassy tones.
Using a 20-volume developer instead of a 10-volume developer will result in a greater lift and a lighter color outcome. The higher hydrogen peroxide content helps open the hair cuticle more, allowing the color to penetrate deeper and lighten your natural shade.