However, other factors such as your hair type affect how much your hair can be lifted. This is true to some extent meaning the bleach will only lift the hair about two to three shades, where a higher developer volume will lift more. There have been speculations that the bleach mixture will only work for a certain period then it goes dormant. What Happens If You Leave Bleach on Your Hair for Too Long? This applies whether you use a high or low volume developer, preferably lower. Ideally, if you’re only bleaching the roots, where the regrowth has happened, the time will also be shortened as the roots take a short time to bleach thanks to the heat around the scalp. This will protect your hair from further damage from bleaching. If your first bleaching session was 30 minutes, the rest would have to be shorter by five minutes or more. This means your subsequent sessions will last shorter than the initial one. Sometimes, you want to bleach your hair more than once to achieve a certain lift that would otherwise be impossible in one session. Remember to include all these other factors to get the right time.Īlso note that different brands work in different ways so regardless of the volume of the developer, look at the instructions on the packet for further guidance. We have already touched on this in the above sections where we have mentioned the higher the volume, the less time you should leave the bleach on your hair. The lighter you want your hair, the more bleach you need. So this simply means the longer you leave the bleach on your hair, the more your natural hair color will lift, and the lighter your strands will become. Also, if you simply want a subtle change then less time would be needed rather than the entire 30 to 45 minutes that lifts the hair two to three shades lighter. Your hair goals will determine if one bleaching session is enough or you need a series of them. This is also the case if you had already lifted the hair previously and are on your second or third bleaching process. Moreover, such shades may need more than one bleaching session to get to their intended lightness.Īs for blondes, your hair is already lighter than all the other shades so you only bleach for a short while. If you’re starting with dark brown or black strands, you’ll likely need to leave the bleach on your hair for longer to achieve the lightness you crave. There are different shades of hair from blonde, black, brunette, brown, and redheads. Many factors surrounding the hair such as texture and porosity play a role in how the hair is lifted by bleach. Virgin hair or natural hair may also take longer to bleach. Other things come into play, for example ĭifferent hair types will react differently where fine thin hair will bleach faster than thick coarse hair. The type of hair volume developer used with the bleach isn’t the only thing you should consider with your timing. Any more will lead to hair damage, breakage, and split ends. If you do, it has a fast turnaround time of just 10 minutes. Even with stylists, aestheticians, and some chemists. The percentage of hydrogen peroxide in this developer is very high and riskier than any other. Unfortunately, the 50 volume isn’t sold legally in many places around the world. How Long to Leave Bleach in Hair 50 Volume Besides your hair will still be safe and will have little to no hair damage. That should allow all the bleaching to occur. Because of its low concentrations and gentleness, it can stay a maximum of 45 minutes. It’s used on no loft dyes and best for beginners. The 10 volume hydrogen peroxide developer is the lowest available concentration. How Long to Leave Bleach in Hair 10 Volume It’s not entirely strong and could use another application so don’t leave the hair in too long expecting better results. From 20 to 40 minutes, it can lift the hair two to three tones lighter. It’s relatively safe and could stay in longer. Vol 30, 20, 10 How Long to Leave Bleach in Hair 20 VolumeĪ 20 volume hair developer is quite standard. The best time to leave the bleach in would be 15 to 30 minutes maximum. Vol 40 How Long to Leave Bleach in Hair 30 VolumeĮven with less percentage of hydrogen peroxide, it’s still strong and could also leave burns on the scalp not to mention sensitivity and irritability. After 20 minutes, probably less, your scalp and areas around the face will start to feel like they’re getting burned. An at least 40 volume hair developer is very concentrated with 12% hydrogen peroxide which means you only need very little contact with your hair. How Do You Know When It’s Overstayed? How Long to Leave Bleach in Hair 40 Volume
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