They could make waves in the beauty business (8)

I believe the answer is:

crimpers

I'm a little stuck... Click here to teach me more about this clue!

This clue could be a double definition.

'they' is the first definition.
Both the definition and answer are plural nouns.
Maybe you can see a link between them that I don't see?

'waves in the beauty business' is the second definition.
Although both the answer and definition are plural nouns, I don't understand how they can define each other.

'could make' is the link.

Can you help me to learn more?

I've seen this clue in The Telegraph.

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