You want your hair to be in good condition, Belcher says—meaning hair that isn’t damaged from heat or over-processed from chemical treatments such as straightening or relaxing hair. “You don’t want to further compromise fragile hair,” Belcher says, since using too many chemicals in a short period of time can weaken and further damage your hair. So if you use lots of hair tools or treatments and notice that you’ve got dry and brittle hair, pause on the hair dye! Belcher recommends talking to your stylist for strategies to strengthen your hair (like trimming split ends or deep conditioning). They also might recommend a semi-permanent color instead to minimize damage if you’re really set on a change.
Learn how to make a great hair moisturizer at home: