Intense Pulsed Light (IPL)
Intense Pulsed Light (IPL)
Intense Pulsed Light (IPL) devices use broad-spectrum, non-coherent light (typically 5001200 nm) delivered in pulses to heat chromophores such as melanin and haemoglobin. Though not a laser, IPL is widely used for hair reduction, photorejuvenation and treatment of vascular or pigmented lesions.
How it works
IPL emits a range of wavelengths that can be filtered to target particular chromophores in the skin. For hair reduction the aim is to heat the melanin in the hair shaft and follicle, producing thermal damage that reduces hair growth over time.
Efficacy & sessions
- Typical course: around 810 sessions spaced 46 weeks apart, depending on the device and treatment area.
- Works best on dark, coarse hair. Results are broadly comparable to laser systems in many studies, though device and operator skill affect outcomes.
Safety & side effects
- Common: redness, swelling, temporary pigment changes.
- Risks: burns and hyper-/hypopigmentation, particularly with inappropriate settings or recent tanning.
- Regulation: "beauty-grade" home devices exist but vary in safety and efficacy; medical-grade IPL used by trained operators is generally safer for higher-energy treatments.
Writing tips
- IPL scenes can highlight the gadget-like and salon aspects of modern beauty: the flash, the mild stinging, and the post-treatment cooling gel.