Volume 20 developer is definitely more gentle and the ideal choice for most of them who wish to bleach their hair before the coloring process.
2.Oh! Lightning Kit has a very high performing bleach powder, so using our gentle 20 volume developer should give you a raise of up to 3-5 levels.
Use bleach with a 30 volume developer for lifts of more than 4 levels.
If you are planning to bleach your hair for the 2nd time, we absolutely recommend you using a 20 volume developer only.
Even for the roots, make sure you use 20 volume developers only as it’s more gentle.
Oh! Tip: Lightning Kit
The At Home Hair Bleach Kit is the perfect prelightening canvas for Semi Permanent Hair Color. Infused with bond-protecting Plex 2.Oh!, enriched with Argan Oil, and featuring Comfort Fragrance Technology, it offers a worry-free bleaching experience, creating the perfect canvas for our semi-permanent hair colors allowing you to embrace a spectrum of your dreams without fear.