My mother was a hairstylist for several years and her rule of thumb for coloring hair was always that the hair should be as clean as possible before applying chemicals. However, I did some poking around and have seen several people claiming that using coconut oil beforehand not only doesn’t inhibit the function of bleach on your hair, it actually protects your hair and scalp during the process.
How to use coconut oil for bleached hair:
1. Coat all of your hair with melted coconut oil root to tip, at night before bed.
2. Cover it with a towel or shower cap and go to sleep.
3. Bleach hair as usual the next day with oil still in the hair.