Consumer New Zealand says the sunbed industry has failed to clean up its act and the Government should now regulate it.
The lobby group says an undercover sting targeting sunbed operators around the country found only 11 of 66 met minimum safety requirements, a similar result to an investigation carried out last year.
Consumer New Zealand chief executive Sue Chetwin says several operators offered broken or poorly fitting protective goggles, while others made false or misleading claims about health benefits and risks of sunbed use.
She says it is time the industry was regulated and forced to meet compulsory health and safety standards.
Ms Chetwin says the watchdog will pass on its findings to the Commerce Commission.
The Indoor Tanning Association says the results are disappointing and supports the call for compulsory standards for sunbed operators.