What should you know about IPL and Nd:YAG laser?

IPL emits a broad band of light that can be filtered for targets such as pigment, redness or hair. Nd:YAG is a laser that emits one selected wavelength; long-pulsed Nd:YAG is often chosen when the clinician needs light to reach a deeper target or to work within a particular skin-tone safety plan. The device name alone does not determine the result.

These technologies may be used for different goals. Hair colour, follicle depth, nail changes, skin tone, recent tanning and active inflammation all affect planning. A consultation should identify the target and explain why a particular wavelength, pulse duration and cooling method are proposed.

Tell the provider about tanning, medicines, light sensitivity, cold sores, scarring history and previous laser reactions. Ask whether a test spot is appropriate and protect the area from sun as instructed. Do not pluck hairs from the root before hair treatment, and do not treat a nail change without confirming its cause.

After treatment, mild warmth or redness may occur. Follow the clinic’s cleansing and sun-protection advice, avoid picking or rubbing the area, and pause other irritating products until told they are suitable. For hair concerns, read about [Laser Hair Removal](/treatments/laser-and-energy/laser-hair-removal/); for nail concerns, see [Laser Treatment For Nail Fungus](/treatments/laser-and-energy/laser-nail-fungus-treatment/).

Contact the provider for blistering, increasing pain, open skin, pus, marked swelling or a spreading dark or pale patch. Seek urgent help for severe facial swelling, breathing difficulty or rapidly worsening symptoms. A changing or bleeding pigmented mark needs medical assessment rather than cosmetic laser treatment.

Ask what target is being treated, why IPL or [Nd:YAG Laser](/technology/nd-yag-laser/) is preferred, whether a test spot is needed, what alternatives exist, and which aftercare signs should prompt contact.