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Does scar laser treatment really work?

Doctors are calling for more research into the popular acne scar removal treatment, after intense testing, doctors found that the treatment had "little impact".

The technique involves using a laser to deliver a yellow light to destroy the bacteria that causes acne.

The yellow light interacts with a substance inside the bacteria called porphorine to create oxygen which destroys the bugs. It also promotes the growth of collagen to prevent scarring.

The therapy was originally marketed in the United States as an anti-aging treatment.

For the full story; Doubts over laser acne treatment.