Thirty women have sued Olaplex, saying that the company’s hair products made their hair fall out, break, and cause other problems.

The lawsuit says that the company used things like lilial and panthenol known to cause allergic reactions (the former being banned in Europe).

Olaplex has said it is not guilty and is “ready to vigorously defend” itself.

“We want to reassure our professional stylist community, clients, and supporters that they can keep using our products with confidence,” the firm wrote on Instagram. “To demonstrate this, we have made public test findings from independent third-party laboratories, exceeding industry norms in the process.”

In a video posted to Twitter, CEO JuE Wong refuted the allegations. Baldness is “A sensitive and unpleasant topic. For our products, however, this is not the case.”

Olaplex came out in 2014, and since then, stars like Kim Kardashian and Drew Barrymore have said they like it. The company has always talked about how its products can fix broken or damaged hair.

According to a Bloomberg report, the Food and Drug Administration has gotten 25 complaints about Olaplex products over the years.

Damages of $75,000 are what the plaintiffs want.