Q-switched Nd:YAG Laser Singapore

Dr. Liew Hui Min

accredited consultant dermatologist

Q-switched Nd:YAG laser treatment uses short, high-energy pulses of light to target pigment in the skin without damaging surrounding tissue. These ultra-fast pulses break down unwanted pigmentation and stimulate skin renewal, making the procedure suitable for treating pigmentation disorders, tattoo removal, and general skin rejuvenation.

Indications Benefits Techniques Preparation Procedure Recovery Risks FAQ

Indications for Q-switched Nd:YAG Laser

This treatment is designed to address pigmentation-related concerns and improve skin texture through targeted laser energy.

Melasma and Age Spots: The laser targets and breaks down excess melanin (the pigment responsible for skin colour), helping to reduce dark patches and improve uneven skin tone.

Tattoo Removal: Q-switched laser energy fragments ink particles in professional or amateur tattoos. The body gradually eliminates these particles through natural processes.

Post-Inflammatory Hyperpigmentation: The laser targets dark marks left by acne or skin trauma without affecting surrounding healthy skin.

Café-au-Lait Spots: These light brown birthmarks may respond to treatment, though results can vary depending on depth and skin type.

Skin Rejuvenation: Low-energy laser pulses stimulate collagen production and improve skin texture, tone uniformity, and clarity.

Benefits of Q-switched Nd:YAG Treatment

Minimal Downtime

Most patients return to normal activities immediately after treatment. However, settings used for superficial pigmentation may have downtime that takes up to 7-10 days.
Targeted Treatment

The laser selectively targets melanin or ink, preserving the surrounding healthy tissue and reducing the risk of scarring or textural changes.
Suitable for Various Skin Types

Q-switched laser treatment is safe and effective across various skin types, except those with darker skin tone.
Gradual Results

Improvement develops over several sessions. This allows for subtle and controlled improvements.
Multiple Wavelength Options

The system offers 1064 nm for deep pigment and 532 nm for superficial pigmentation, enabling comprehensive treatment planning.

Q-switched Nd:YAG Laser Treatment Techniques

Different techniques and settings apply based on the specific condition being treated.

Low Energy Technique (Laser Toning)

For melasma or general tone improvement, low energy is applied in multiple passes to gently disperse pigment and stimulate collagen with minimal downtime.

High Energy Technique

Higher energy levels are used for tattoo removal or deeper pigmentation. A brief whitening of the skin may occur immediately and typically leaves crusts on the skin which can take up to 2 weeks to resolve.

Dual Wavelength Approach

Alternates between 1064nm for deeper pigments and 532nm for superficial marks. This maximises treatment effectiveness for mixed pigmentation.

Preparing for Q-switched Nd:YAG Laser Treatment

Medical Consultation: Your dermatologist will assess your skin type, medication review and discuss expected outcomes.

Sun Protection: Avoid direct sun exposure and tanning for at least 4 weeks before treatment.

Skin Preparation: Stop using retinoids, exfoliants, and acids one week prior. Arrive with clean, makeup-free skin on the day of treatment.

What Happens During Q-switched Nd:YAG Laser

Skin Cleansing

The treatment area is thoroughly cleaned to remove any residue.

Test Application

Small test areas may be treated first to determine appropriate settings.

Laser Treatment

The handpiece moves systematically across the treatment area. You’ll feel quick sensations similar to small elastic band snaps.

Final Assessment

Your skin is examined immediately after treatment. Soothing creams or cool compresses are applied as needed.

Aftercare and Recovery

Immediate Care: Apply prescribed soothing creams to reduce redness and swelling. Avoid hot water, exercise, and steam rooms for 24-48 hours.

Recovery Timeline: Mild redness or swelling may occur and usually subsides within a few hours. Pigmented spots may darken before gradually fading. Anti-pigment cream prescribed should be used after recovery to prevent recurrence and reduce the darkening.

Follow-up Care: Treatments are typically performed every 4–6 weeks. The number of sessions needed depends on the condition being treated and individual response.

Potential Risks and Complications

When performed by a qualified dermatologist, Q-switched Nd:YAG laser treatment is generally safe and well-tolerated. Common side effects include temporary redness, dryness or swelling. Mild discomfort during or after the session commonly occurs and resolves quickly. Some patients may experience temporary darkening or lightening of treated areas. Rarely, blistering or textural changes may occur. Adhering to pre- and post-treatment instructions helps reduce these risks.

Frequently Asked Questions

How painful is the treatment?

Most patients describe mild to moderate discomfort during treatment. The sensation is brief and generally more tolerable than ablative laser treatments.

Will melasma come back after treatment?

Melasma may recur due to hormonal factors or sun exposure. Maintenance treatment and strict sun protection are essential to preserve results.

Can I undergo treatment if I have active acne?

Active inflammatory acne should be controlled before treating post-acne pigmentation. Your dermatologist will advise on appropriate timing.

Dr Liew Hui Min

Dually Accredited Dermatologist In Singapore and the UK

Dr. Liew Hui Min is an accredited consultant dermatologist from the Ministry of Health and the General Medical Council UK.

Her clinical interest includes:

Paediatric Dermatology,
Women’s Dermatology,
General Adult Dermatology.

Having trained in major London Hospitals, Dr Liew returned to Singapore in 2014 as a Consultant at KK Women’s and Children’s Hospital (KKH) where she specialised in paediatric, women, obstetric and vulva dermatology. Currently, Dr Liew practices at The Skin Drs. clinic located at Gleneagles Hospital.

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