What is the Pro Yellow Laser treatment?

The German-engineered Quadrostar ProYellow Laser is an improved version of the commonly used DualYellow and older pulsed-dye laser at some clinics. Due to its special wavelength of 577nm which is the peak absorption of hemoglobin, the ProYellow laser represents the gold standard for vascular treatments and epidermal pigmentation treatments.

What is it used for, and how does the ProYellow Laser work?
This special laser wavelength targets BOTH red and brown marks very effectively.

Vascular (Red) lesions

Vascular lesions are caused by abnormal or dilated capillaries. They can appear as red spots, or visible threads on the skin. The Pro Yellow laser can readily treat that by shrinking the vessels with its unique wavelength.

  • Facial/nose veins and blood vessels
  • Redness and rosacea
  • Bruising
  • Red marks after acne, otherwise known as Post-Inflammatory Erythema (PIE)
  • Cherry angiomas, Telangiectasia etc. – Some of these can be removed in a single session.

Pigmentation & Skin Rejuvenation

The ProYellow laser is the only yellow laser that offers two options for treating pigmentation and skin rejuvenation. The scanner handpiece for larger areas and more diffused pigmentation, and the individual spot handpiece for targeted lesions/spots.

  • Conditions such as melasma – Due to its unique wavelength, the energy from the ProYellow laser is absorbed by both melanin (pigments) and the underlying blood vessels. This results in breakdown of pigments and at the same time, reduces the blood supply to the skin cells that produce these pigments. This will prevent these skin cells from producing pigments and ensure longer-lasting results.
  • Pigmentation such as lentigenes, sun/age spots, freckles and PIH.
  • Skin rejuvenation – Apart from reducing redness and pigmentation, the ProYellow laser’s energy is also absorbed into the dermis (skin layer) to treat and improve the skin’s support structure. Skin will look brighter and feel tighter with just 1 treatment.

How does it work – The ProYellow Difference

The main difference between the ProYellow laser and other skin rejuvenation lasers is its unique wavelength. Compared to its predecessor, the DualYellow laser, the ProYellow laser has a more pure and specificwavelength of just 577nm, instead of a mixture of 532nm (green) and 577nm (pure yellow light). This specific wavelength of 577 nm means that the ProYellow Laser can be used to safely treat various conditions such as pigmentation, rosacea, red acne marks, uneven skin tone etc.

Traditionally, the most commonly used laser wavelength for the treatment of pigmented lesions (such as sun spots & age spots) and vascular lesions (or unsightly veins) has been the 532nm laser, or green laser light. Green lasers provide very good results in skin types I to III, but 532nm is no longer the ideal wavelength (or color) for targeting vascular lesions for skin types 1-IV.

The ideal wavelength is 577nm, or yellow light and until the North American debut in 2014, a pure yellow laser of sufficient power for skin rejuvenation was not available. That is until the debut of the QuadroStar ProYellow laser, the industry’s first 577nm pure yellow laser for skin rejuvenation.

The Pro Yellow wavelength (577nm) provides the best absorption when treating blood vessels. Compared to the standard green wavelength (532nm), the yellow wavelength is able to produce 40% higher absorption in blood. This translates to less required power during treatment, which in turn provides a number of significant advantages.

Apart from being at the correct wavelength, these lasers utilize proper pulse durations that ensure proper absorption by red ‘targets’ in the skin. Long pulse lasers are needed for hemoglobin absorption – something that short pulse lasers are not able to achieve. There are many gimmicky Gold-Toning or Yellow-Light treatments – these are either Q-switched/PICO pulse durations or non-focused beams of light that are completely unsuitable for effective redness treatments. In other words, apart from having the correct yellow wavelength, the proper pulse duration is needed for it to work well.


By varying the various laser settings, this powerful laser can be tuned to treating either red lesions or brown ones. In the wrong hands, this laser will not only fail to deliver results, but can also cause side effects and scarring.

VERITAS recently hosted and spoke alongside the German inventors of the ProYellow in a symposium conducted in Singapore.

Our founder is currently the only Singaporean LAHA international expert lecturer, and has given talks to local and international doctors on various skin conditions, contributing actively to international clinical publications. Our team of doctors have lectured at the American Academy of Aesthetic Medicine (AAAM) as well as the National Surgical ATLS team.

VERITAS Medical is frequently used as a local and international training centre for various laser, medical devices and also injectable filler/botox/threadlift procedures. Our team of doctors specialise in laser and skin treatments with full accreditation by the Singapore Medical Council. Our various post-graduate qualifications in MRCS (Membership of Royal College of Surgeons Edinburgh) and GDFM (Graduate Diploma in Family Medicine) reflect the expertise of our doctors and our commitment to our patients’ safety and results. This medical expertise ensures the treatments offered in the clinic are firmly grounded on solid science.

Aesthetic medicine is more than a precise science, it is also an intricate art. As avid photographers and musicians, our doctors try to balance the science with the art with every patient that we see, and bring out the best in each individual. In fact, the clinic is decorated to reflect our artistic hobbies, with portrait photographs that show individuals at the pinnacle of their craft. These large photographs ultimately portray that our core business is about the craft and also about each individual human being. We have been on many media features such as HerWorld, Prestige, NuYou and etc, as well as contributing regularly to medical sites like DoctorXDentist and HealthAscent.


Each unique patient/condition requires a different treatment protocol. Results are typically seen from the first session and usually only takes 2 to 4 sessions to give optimal results.

Each laser shot feels like a small ant bite on the skin and is generally very tolerable. The Pro Yellow laser has a cooling plate on its scanner handpiece. We also use Zimmer air cooler technology to maximise comfort.

  • Depending on individual, there can be some redness after treatment that can last up to a few hours. The appearance is similar to the effect of applying a light blusher.

Sunblock is essential after laser. Depending on your condition or skin type, we may recommend you different proprietary post-care creams as well for optimal results. This is not compulsory but ensures a tailored treatment.

It is safe as the Pro Yellow is a non-ablative laser.

Certain mass-market clinic chains offer daily laser regimes. These lasers are usually Q-switched lasers (Gold-Toning lasers) only and do not help with redness or vascular lesions. Those clinics can also only offer one-size fit all treatments due to their quick protocols and limited laser choices.

These frequent treatments are potentially dangerous as seen in these cases of mottled skin noted by dermatologists in the National Skin Centre: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4695430/

Abnormal vessels once removed are permanently gone. However, various lifestyle factors can cause new ones to form and may require maintenance treatments.

The total cost may vary for each patient because this will depend on the severity of each patient’s condition and the area affected. Please bear in mind that we customize our approach for each patient, which means that the components of your combination treatment may not necessarily be the same as the next person’s treatment. We suggest that you come in for a personal consultation so that our doctors can thoroughly assess your condition and map out a specific treatment plan and its corresponding quotation.

Contact Us

Please drop us a call or send in a contact form and we’ll be happy to assist you.

13 Stamford Rd, #B2-35 Capitol Piazza, Singapore 178905
+65 6283 3885

We’ll love to hear from you.