The owner also said Ms Tyson should have given the salon the opportunity to fix her eyelashes, rather than going to another beauty therapist.
She also denied claims she was rude, and refused to give a refund as she didn't want to encourage people getting "freebie treatments".
This was the first complaint she had received from a customer in the six years she had been in business.
The lash artist who helped Ms Tyson remove her extensions said botched eyelash treatments were all too common as the industry was unregulated in New Zealand.
"Basically anyone can pick up a pair of tweezers and do this."
However, applying eyelash extensions required a high level of skill.
"It takes years to perfect. It takes you a few years to become good and then you're always needing to improve all the time," she said.
She said the industry needed to be regulated. At present an industry group, the Association of Registered Beauty Therapists, regulates its 700-odd members, but membership is voluntary.
Under the Auckland Council Health and Hygiene Bylaw, businesses providing services such body piercing, tattooing and removing hair by waxing or tweezing were inspected every year to ensure it was clean and hygienic.
Auckland Council environmental health manager Mervyn Chetty said the West Auckland salon had a beauty licence for waxing. However, eyelash extension treatments weren't included under the bylaw and therefore didn't require a licence.
He said the council had not received any complaints about the salon.