Two-thirds of sunbed operators in New Zealand failed to meet safety requirements in a mystery shopper survey by the consumer watchdog.
Consumer NZ said the result was an improvement from its last nationwide survey in 2011, when only 17 per cent met safety rules, but it was still "not good enough".
"Our mystery shoppers found operators who showed little concern for the safety of their clients," said Sue Chetwin, Consumer NZ head.
"One mystery shopper was handed the keys and goggles, and sent to the cubicle to do it herself. She said she could have stayed in there as long as she liked and nobody would have known."
Concerns were raised about whether sunbed operators were delivering a controlled UV dose within safe time limits.