A group of 30 women has filed a lawsuit against Olaplex, claiming that the company's hair products caused hair loss, breakage, and other problems. 

The lawsuit alleges that the company used ingredients that are known to cause allergic reactions, such as lilial and panthenol (the former being banned in Europe). 

Olaplex has denied the charges and stated that it is "prepared to vigorously defend" itself. 

"We want to reassure our community of Professional stylists, customers and fans that they can continue to use our products with confidence," the company said in an Instagram post. "To demonstrate this, we have publicly released test results from independent third-party laboratories, going above and beyond industry standards."

CEO JuE Wong also denied the accusations in a video posted on Twitter. Hair loss is a "painful and emotional topic. However, for our products, this is not true".

Olaplex launched back in 2014 and has since garnered endorsements from celebrities such as Kim Kardashian and Drew Barrymore. The company has long touted its products ability to restore broken or damaged hair. 

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

The plaintiffs are seeking $75,000 in damages.