Peroxide & Developer
Developer comes in different strengths, the common ones being 10 volume, 20 volume, 30 volume and 40 volume. It’s possible to buy peroxide in stronger concentrations but they’re much too strong to use on hair and should be avoided. Developer strength is sometimes represented as a percentage. 6% and 20 vol. are the same strength.
Equivalent Developer Strengths
|
|
10 Volume
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3%
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20 Volume
|
6%
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30 Volume
|
9%
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40 Volume
|
12%
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What strength/volume developer should I use?
10 volume is ideal for use when you don’t want the natural hair colour to be lightened by the dyeing process. It’s used in toners and colour glazes. These types of dyes are known as “deposit-only”.
20 volume peroxide is commonly used with semi-permanent and permanent hair colours. It can have a lightening effect on natural, undyed hair of 1 or 2 shades when used with permanent colour.
When mixed with bleach powder, 20 volume developer will lighten virgin hair by about 5 levels.
30 volume developer is used for lifting out colour. Its main use is in bleaching and it can lighten around 7 levels depending on the bleach powder used.
40 volume is occasionally used to lighten very dark, stubborn hair as part of the bleaching process. It lightens quickly and its effects are harsher than lower concentrations. 40 volume is not recommended for on-the-scalp use. Using 40 volume developer can cause hair damage and chemical burns if not used correctly. Instead, using multiple applications using lower volume peroxide will allow more controlled lightening.
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I have bought online for many years, Inoa dye color is very suitable for me, there are many dye colors which can fully meet my needs, and the customer service is very attentive
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I have dyed my hair every color you can think of, using every brand to find the best. I first got Star berry at the salon, with two other Joico intense purple shades. The purple shades lasted 2 washes, but the star berry lasted vibrant and lovely for 6 months, and faded slightly over the next 2. That’s when I decided to dye my hair at home, using True lav( awful, see my review) and the great Jerome Russel purple but overwhelming Starberry. I lightened my hair much more and was OVERJOYED with the results-except for the true lav-which I waited and then colored over with starberry, and it is so gorgeous!! This dye is AMAZING, without doubt the best dye I’ve ever had in my hair -out of DOZENS of shades and brands!
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