'Huge task' to track unregistered laser salons
Significant areas for improvement are needed at clinics and beauty parlours offering laser treatment, Health Inspectorate Wales (HIW) has warned.
Lasers and intense pulsed light (IPL) are used for hair, spot and tattoo removal and skin treatments.
Six of the 19 premises inspected in the last year were asked to voluntarily stop providing treatments until concerns had been addressed.
HIW found issues which it thought could "potentially pose risks" to patients.
Jodie Grove, a clinical nurse specialist in Swansea and also a member of the British Association of Cosmetic Nurses, said there were a lot of establishments which were not registered, probably due to cost but also because staff were not qualified.
She explained to BBC Wales reporter India Pollock what it involved.
29 Sep 2016