Here are the possible solutions for they're used to put highlights in hair clue
Answer
Clue
Relevancy
dyes
Clue
They're used to put highlights in hair
They may provide highlights
They provide highlights
They can create highlights
Definition
DYE, to change the colour of
streaks
Clue
Some hair highlights
Hair highlights
dyed
Clue
Put highlights in, say
Definition
DYE, to change the colour of
tba
Clue
Letters the Bluths put on the invitation to a fundraiser they couldn't think of a good cause for, which eventually became the fake disease they used to pocket all the donation money, on "Arrested Deve