David Gault, a member of the British Association of Aesthetic Plastic Surgeons (Baaps), was one of the experts involved in developing the first ever laser for hair removal.
Mr Gault, who acts as an expert witness in cases involving 'botched' cosmetic treatments, is concerned that deregulation could lead to complications for patients.
"Just because a laser is used for cosmetic purposes, it does not mean that it is any less dangerous," he claimed.
"I would be very concerned about untrained attempts to treat port wine stains and pigment spots and any treatment at all on children."
The laser treatment expert, who is based at London's Cadogan Clinic, added: "If any changes in regulation should be proposed at all, they should be to control their use more stringently - not less."