Laser Rejuvenation

LASER stands for “Light Amplification by Stimulated Emission of Radiation”

Laser Rejuvenation 雷射焕肤

LASER stands for “Light Amplification by Stimulated Emission of Radiation”

what is Laser?

Light travels in waves consisting of different wavelengths, e.g. visible light around us has a wavelength range of 400-750 nm. If you break down the range of wavelength, you will see multiple wavelengths represented by different colors (the phenomenon of rainbow).

Different from normal day light (unfiltered), laser travels in a single wavelength (after filtration), which will be absorbed specifically by its target (chromophore). In other words, laser light will only be absorbed by its chromophore. There are 3 main chromophores in the skin namely: melanin, hemoglobin and water.


Melanin is the pigment that gives our skin, hair and eyes their colours. Sun exposure and hormonal changes increase the melanin production in the skin, leading to pigmentation. Targeting melanin chromophore, laser is being absorbed and the heat from the laser ‘melts’ the melanin/pigment.


Hemoglobin is a component of blood, which contributes to facial flushing, fine capillaries and certain birthmarks. Laser targeting hemoglobin chromophore will coagulate small blood vessels and reduce the unwanted facial redness.


Water is the main component of skin cell and tissue. Laser that targets water chromophore (e.g. CO2 laser) can induce destruction of scar tissues with the aim of rebuilding new skin cells. This is effective in treating acne scars and large pores.

Pico Laser 皮秒雷射

1 second = 1000 millisecond

1 millisecond = 1000 microsecond

1 microsecond = 1000 nanosecond

1 nanosecond = 1000 picosecond

Traditional laser emits waves in nanosecond and Pico laser in picosecond is 1000 times faster!

Roles of Pico laser

Rejuvenation for Skin Tone & Pigmentation Removal

Resurfacing for Acne Scars & Large Pores

Tattoo Removal

Pico Rejuvenation & Pigmentation Removal

Due to its high speed and ultra-short pulse duration of the laser shock wave, it shatters the target pigment while minimizing the conversion of energy into heat, which subsequently reduces the risk of overheating (pigment may flare up under heat). It also allows a higher volume of laser shots to be fired in a given time which delivers a more effective treatment per session.


No. Laser energy is being converted into heat in the skin which will not cause skin peeling or thinning. Moreover, outer skin layer regenerates continuously and sheds every 30-40 days.

Generally, once a month is adequate. Some stubborn pigment condition such as melasma may require more frequent treatments e.g. every 2 weeks with a lower energy setting.

All brands of Pico machine have similar speed of laser pulse. What differ among them are the peak power and the wavelength. Pico Plus is superior because it has one of highest peak power (1.8 GW) with 4 wavelengths (532, 595, 660, 1064 nm), which can treat a wide variety of skin related problems.

No, there is no downtime for Pico rejuvenation. Temporary redness will disappear within an hour and you can go back to office or resume exercise on the same day.

IPL (Intense Pulse Light) uses broadband light pulses consisting of a range of wavelengths (500-1200 nm), whereas laser uses single wavelength. Laser is more target specific whereas IPL covers all layers of skin. IPL is useful for general toning and rejuvenation whereas laser is safer in darker skin, more efficient in treating pigments, tattoos and scars.