No. Laser hair removal doesn't cause cancer. The myth comes from the word 'radiation' — which, used loosely, covers both X-rays and lightbulbs. Biologically they're not the same thing.
Ionising vs non-ionising
X-rays, gamma rays, and some UV are ionising — they carry enough energy to break DNA bonds, which is how they cause mutations. Laser hair removal uses infrared light (typically 755 nm to 1064 nm), which is non-ionising. Not enough energy to touch DNA. No mechanism for cancer.
What the laser actually does
The wavelength is absorbed by melanin in the hair follicle. That absorbed energy turns to heat. The heat kills the follicle. It's localised, it doesn't reach DNA-replicating cells in any way that could cause cancer, and this has been confirmed across 30+ years of clinical use.
Where the myth started
Two sources. First, 'radiation' triggers the X-ray association. Second, some old reports about IPL (different technology, broad-spectrum light, still non-ionising) talking about benign pigmented lesions looking more prominent. Neither is hair removal laser, and neither is cancer.
What is true — mole safety
Laser should never be fired directly over a mole. Your dermatologist should assess moles in the treatment area and cover them. If a mole changes size, colour, or shape — for any reason, laser or no laser — book a skin check.
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