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

KTP laser systems commonly target visible pigment in selected blood vessels or redness. Nd:YAG systems use a longer wavelength that can reach deeper targets and may be selected for hair reduction or particular vascular concerns. The device settings, cooling method, pulse pattern, and operator technique affect the experience and skin response.

A consultation should identify whether the concern is hair, visible vessels, pigment, or another target. Tanned or recently irritated skin can change the treatment plan. Darker skin may need conservative settings and careful monitoring because pigment changes can occur after energy-based treatment.

Tell the clinician about recent sun exposure, tanning products, medicines that increase light sensitivity, cold-sore history, and any active rash or infection. Follow the clinic's instructions about shaving, skincare products, and sun protection. Do not pick crusting or rub treated skin; keep it protected from sunlight while it settles.

Temporary warmth, redness, swelling, or small changes around treated follicles can occur. The expected recovery depends on the device and area treated. Nd:YAG may be used for [Laser Hair Removal](/treatments/laser-and-energy/laser-hair-removal/) or selected nail concerns such as [Laser Treatment For Nail Fungus](/treatments/laser-and-energy/laser-nail-fungus-treatment/).

Seek prompt medical advice for worsening pain, spreading redness, marked blistering, pus, fever, eye symptoms, or a change in vision. Contact the treating clinic if swelling continues to increase or if a dark or pale patch develops and does not begin settling. Eye protection is essential whenever treatment is performed near the eyes.

Ask which wavelength is intended for your specific target, what skin reaction is expected, how your skin tone affects settings, how many visits may be considered, and what alternatives are available. Ask who will perform the treatment and what follow-up is provided if your skin reacts unexpectedly.