Bleach, Vol. 20". Viz Media. Archived from the original on November 28, 2018 . Retrieved May 3, 2014. Bleach, Vol. 41". Viz Media. Archived from the original on November 29, 2018 . Retrieved May 3, 2014. Bleach 37" (in Japanese). Shueisha. Archived from the original on March 9, 2009 . Retrieved May 3, 2014. Bleaching damaged hair with 30 vol can also damage the cuticles of your hair. The cuticles are the outermost layer of your hair, and they protect the inner layers of your hair from damage. When the cuticles are damaged, your hair is more susceptible to damage from heat, chemicals, and other environmental factors.

Bleach (3-in-1 Edition), Volume 10". Viz Media. Archived from the original on November 9, 2014 . Retrieved November 9, 2014.

Bleach 14" (in Japanese). Shueisha. Archived from the original on June 9, 2013 . Retrieved May 3, 2014.

Apply organic coconut oil to your curls the night before bleaching your hair. Cover your hair in a shower cap and wear it overnight. Don’t rinse the oil out. Coconut oil forms a natural barrier between the developer and hair fiber and helps to prevent protein loss. Don’t worry; it won’t affect the final result.

Bleach, Vol. 40". Viz Media. Archived from the original on November 29, 2018 . Retrieved May 3, 2014. Bleach 32" (in Japanese). Shueisha. Archived from the original on June 9, 2013 . Retrieved May 3, 2014. The processing time for 30 volume developer is typically 15 to 30 minutes. However, you should always follow the instructions provided with your bleach and developer to ensure that you achieve the desired result without damaging your hair. Q: Can I use 30 volume developer on dark hair without bleach?