In what has become an unfortunately familiar experience, yet another retailer is announcing that it might’ve been the victim of a potential data breach: Sally Beauty confirms that it’s investigating “unusual activity” involving payment cards at some of its U.S. stores. This, a year after a breach that affected tens of thousands of customers.

The company says it’s working with law enforcement and its credit-card processor as well as a third-party forensics expert to determine the scope of any potential breach, but there won’t be any numbers until the investigation is done, as “it is difficult to determine with certainty the scope or nature of any potential incident,” the company says in a statement.

The company adds that it “will continue to work vigilantly to address any potential issues that may affect our customers.”

Sally Beauty says concerned customers can call its customer service hotline at 1-866-234-9442, and that the company will provide updates as appropriate as the investigation continues.

The company confirmed that this investigation is separate from last year’s incident, the Wall Street Journal reports, which reportedly hit about 25,000 customers — but may in fact have affected more than 280,000 credit card numbers, security researchers later said.

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