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
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|
10 Volume
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3%
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20 Volume
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6%
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30 Volume
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9%
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40 Volume
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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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from 1140 reviewsGreat way to try the line with these very deluxe size products!
Made my hair actually manageable instead of flat and harder to style!
Love the oil, really good quality.
Love the ease of finding new beauty and hair products. Fast shipping and great quality!
Worked wonders on over-processed hair. Left a lovely subtle shade a massive amounts of shine to dull overdone hair.
What more can one say? Schwarzkopf and Cosmetic World make an excellent partnership. Product is good, price is right, delivery and service are excellent.
I had trouble doing an online order. When I called the customer service was amazing and helped me with my order.
Am happy with the product and receiving it by mail. Thanks.
Probably the best creative colour I’ve ever used. First wash didn’t fade colour at all! Really nice mint colour, would highly recommend!!!
So glad I found Schwarzkopf Bonacure Peptide at such a great price. Works so well
Best of the best, it lifts everything even with a lower developer, and doesn’t fry the hair.
I have used this shampoo after bleaching my hair, it makes the hair so smooth and silky ,im definitely buying the bigger size and it’s conditioner.
This toner is like no other , it removes brass and yellowish tones from lightened hair , amazing results.
This product made a difference from the first use , it smells amazing and gives a glow to the hair, i will be restocking since its a must have for blond hair.
I used this instead of 20 volume to lift my brown hair , it did it without causing any damage … it’s amazing for the blond me toner too .
I love this stuff! It’s just so so expensive, this is the best price that I found anywhere! It is truly an amazing product though. Well worth the money!
Good price fast shipping
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