The beauty industry in New Zealand is a wild west devoid of regulation, and the price people are paying can take the form of scars, burns and infections.

No medical qualifications required - yet technicians in the rapidly expanding beauty industry are dealing with dangerous substances.

There is nothing to stop someone from buying a laser machine online and setting up a shop offering treatments for skin. Or injecting dermal filler into a client's face.

No qualifications are needed for either treatment, but when it goes wrong the results can be life changing, even life threatening.

Cosmetic medicine professionals say the industry is exploding, with investors from offshore who are driven by profit taking advantage of the lack of regulations.

"I don't think anyone's allowed it to happen, it's just happened," dermatological surgeon Dr Ken MacDonald says.

"A few years ago it never occurred to us that any Tom, Dick and Harry would get one of these machines, but it's happened."

MacDonald says not all laser companies have a "proper ethical stance. In other words, they are prepared to sell these devices to anyone who pays for them".

People doing laser treatments may have two days training, and without any medical qualifications they may mistake an early melanoma for an age spot, or the client gets burnt, or gets an infection which leads to scarring.

"They say: 'oh yes, we can treat that', but they don't know what it is and so there is clearly a diagnosis failure."

MacDonald, who is the chair of the New Zealand Cosmetic Dermatology Surgical Group, urges clients to go to clinics that have a medical component.

He says there are local regulations for Auckland businesses but they are toothless. He wants to see lasers in a more supervised environment where there is more access to medical help and where the health and safety standards are adequate.

"There've got to be policed standards and ideally an association with medical clinics so people can get a prescription for infections or early skin damage treated in an appropriate way," he tells The Detail.

Doctor Sarah Hart has a box labelled 'blindness' in her Ponsonby cosmetic clinic, an emergency kit in case something goes wrong when she is injecting dermal filler into a client's face. It contains a substance that can reverse the treatment and avoid causing blindness. It is mandatory for all members of the New Zealand Society of Cosmetic Medicine.

But it is not a legal requirement for people administering dermal filler and nor do they need a medical qualification…

Go to this episode on rnz.co.nz for more details