Basics of Laser technology and Nd:YAG

Cool Glide Vantage

Cool Glide Nd:YAG Laser

​Laser hair removal works by using laser light that converts to heat to disable the hair follicle.

At Silk Laser we use Nd:YAG which creates a long wavelength (1064nm) and therefore can be used to target hair at any depth in the skin. This does not affect the pigment in skin.

The purpose of a Laser Hair Removal treatment is to selectively treat the​ hair follicle without causing thermal damage to the surrounding tissue.

The Cutera CoolGlide is the best laser hair removal system on the market for all skin types and tones, from light to dark, including tanned patients. 

Its unique design, longer wavelength, and innovative cooling design, allow extremely effective, safe and permanent results. 

FDA Approved Medical Grade Laser Technology

In the year 2000, the Cutera Cool Glide ND:YAG Laser was the first long-pulse laser cleared for permanent hair reduction by the FDA. The Cutera, Inc. CoolGlide Nd:YAG 1064nm Lasers are

FDA-cleared for: 

Hair removal
Permanent hair reduction

Treatment of all skin types, including tanned skin

Treatment of pseudofollicultis barbae (Ingrown hair)

Minimum Discomfort

The copper cooling tip protects the skin from burning without the risk of causing pigmentation changes.

Anagen catagen telogen hair growth phases

​​Hair has three growing cycles which are all present at the same time.

Anagen Phase
“Active” phase of hair growth when laser hair removal is effective.

Hair contains an abundance of melanin and cells are rapidly dividing.

Catagen Phase
Transitional phase lasts about 2-3 weeks. 3% of hair are in this phase.

Telogen Phase
Resting phase - hair falls out in preparation for the development of new hair.


Cutera is the only company that uses real time calibration.

The Laser only sends out a laser beam that matches the requested energy level over the specified time frame.

The Coolglide carries out a self-check at start up and will not start if for some reason it does not meet all of the parameters to operate. The required parameters on the laser are set, (energy, laser’s pulse duration, and spot size). The laser hand piece is then placed on the skin momentarily to cool the skin then the laser beam is fired, destroying the hair follicles below the skin’s surface.

Protection of the Epidermis 

(top surface of skin)
The above video illustrates how the powerful laser beam goes through the epidermis, keeping it intact only destroying the dark target.

Permanent hair reduction is achieved by using heat to disable the deep hair follicle and prevent re-growth. 

Laser light is absorbed by melanin in the hair, which in this case is the target (chromophore). The light is converted to heat. Heat damages the bulge and bulb, disabling the hair structure.
Hair must be brown or black. Laser light is not absorbed by white, grey, red or light-blonde hair.