The instructions below will work for 10, 20, and 40 volume peroxide. The hydrogen peroxide typically bought at the drug store is 10 volume. It will work but much less dramatically. See below for a comparison image. Materials Make sure your hair is healthy enough to bleach. If you’ve recently bleached your hair (within 2-4 weeks) or feels damaged, it’s best to postpone bleaching for a while – even with 20 vol developer. It’s only safe to bleach your hair when it’s at its healthiest. If you bleach when your hair has any symptoms of damage or has recently been subjected to a harsh chemical treatment (like bleach, color, perm, etc.), wait 2 weeks or more before bleaching to avoid unnecessary damage. You can achieve 1-2 levels of lift with 20 volume developer and bleach. So if you’re starting out as a dark blonde (level 6), you could potentially get to light blonde (level 8) by using 20 volume developer with bleach. The only time you should leave bleach in longer than 30 minutes is if it’s specifically recommended by the product that you’re using. The term 20 volume refers to the amount of developer (or hydrogen peroxide) in a bleach. More hydrogen peroxide in the mixture creates a “stronger” bleaching agent.

Adults and children should wear safety goggles and plastic gloves at all times during this experiment One way you can minimize the damage is by preparing your hair beforehand and nourishing it with hydrating products, like deep conditioning treatments, moisturizing shampoos, hair masks, and hot oil treatments.You could even consider trying the squish-to-condish technique.If you accidentally turn your hair orange by leaving bleach in for too long, there are ways to fix this, and you are not doomed to be called “carrot top” forever. Use a Toning Shampoo Ask your doctor or pharmacist before using this medicine if you are pregnant, might be pregnant or are breastfeeding. Although this will not prevent damage to your hair, as bleach is a very potent product, it can minimize it. Apply Bleach Correctly Stay watchful and be precise with your timing when you bleach. Going even one minute over the suggested processing time can be the difference between ending up with healthy, lightened hair and straw-like, damaged hair.

First I like to demonstrate the project in front of the kids using the 40 volume version of the experiment. It’s a wonderful way to get the kids revved up and excited. Set-up a table in front of them where they watch at a safe distance. Talk about the safety procedures while doing the experiment. Add in a countdown for extra anticipation!

Ingredients

The longer you can wait before bleaching your hair again , the better your hair will fare. But you can bleach your hair again after about 2 weeks without causing too much damage. If you’re using 20 volume developer in your bleach mixture, you’ll get the most lift and best results when you time it properly. Determining how long to leave bleach in hair with 20 vol developer starts with taking a look at your hair’s color and characteristics. Leaving bleach in for too long will also affect your appearance. Instead of getting the blonde hue that you wanted, your hair could turn orange.

If your hair is light, to begin with, then you will only need to leave the developer in your hair for a few minutes. If your hair is darker, you may need to leave it in for longer. When you want a natural hair color that is less harsh, you dilute 40 to 10. Volume 40 developers as we all know are very dark and harsh. Mixing in the ratio mentioned gives you 30 volume. How to dilute 30 volume developer to 20?

Uses / Instructions

The excess may also weaken the color shade. The suggested mix is usually one to two parts developer only. 3. What volume developers cause damage to hair? Bleaching can be quite an intensive process for your hair because it strips your hair of so many nutrients. In short, the higher the volume, the higher the risks of damage to hair and scalp. If we don’t have a 20 vol. developer, we dilute 30 vol. to 10 vol. to get a 20 volume. How to dilute 20 volume developer to 10?