What should you know about Nd:YAG laser for skin whitening?

The treatment uses focused light energy to heat pigment or pigment-producing targets in the skin. A dermatologist must first identify why the area looks darker, because melasma, post-inflammatory hyperpigmentation, sun-related spots and other conditions can respond differently.

Nd:YAG refers to the laser medium, and the commonly used 1064 nm wavelength can reach deeper skin layers than some other pigment lasers. The clinician chooses settings according to your skin tone, the pigment pattern and the diagnosis. Lower-energy approaches may be discussed for diffuse uneven tone, while a different plan may be more suitable for a defined spot.

Results are gradual and variable. Temporary redness, warmth, swelling, darkening or lightening of treated skin can occur. In darker skin tones, excessive heat or unsuitable settings may increase the risk of post-treatment pigment changes. A treatment plan should include sun protection and review of products or medicines that may make the skin more sensitive.

Arrange an in-person assessment before booking treatment. Tell the clinician about recent tanning, a history of melasma or dark marks after irritation, active rashes, cold sores, keloid scarring, pregnancy, and every cream or medicine you use on the area.

Follow the clinic's instructions about pausing irritating products and avoiding tanning. After treatment, use the recommended gentle cleanser, moisturiser and broad-spectrum sunscreen; do not pick, scrub or peel flaky skin. Keep follow-up appointments so the clinician can decide whether the skin is healing as expected before another session is considered.

Contact the treating clinic promptly if pain is worsening rather than settling, blisters or open areas develop, swelling spreads, or the treated skin becomes increasingly dark or pale. Seek urgent care for facial swelling with trouble breathing, faintness or a rapidly spreading blistering reaction.

Do not use another lightening product or arrange further laser treatment to correct a new colour change without an examination. A persistent patch may need a diagnosis and a different treatment rather than more energy.

Ask: What is causing my pigmentation? Is Nd:YAG appropriate for my skin tone and diagnosis? Which side effects are more relevant for me? What will you do if the area becomes darker? Which products should I pause, and how will we judge whether treatment is helping?