FOR PERMANENT HAIR REMOVAL

Hair Removal (by Wikipedia)

Hair removal, also known as epilation or depilation, is the removal

of body hair, and describes the methods used to achieve that result.

Hair typically grows all over the human body during and after puberty.

Men tend to have more body hair than women. Both men and women

have hair on the head, eyebrows, eyelashes, armpits, pubic region

and legs; and men also have hair on their face, abdomen, back and

chest. Hair does not generally grow on the palms of the hands, the

lips, certain areas of the genital structure, or the soles of the feet.

Forms of hair removal are practised for a number of reasons,

including cultural, sexual, medical and religious. Forms of hair removal

have been practised in almost all human cultures. The methods used

to remove hair have varied in different times and regions, but shaving

is the most common method.

Permanent hair removal For over 130 years, electrology has been in use in the United States.

It is approved by the FDA. This technique permanently destroys germ

cells responsible for hair growth by way of insertion of a fine probe in

the hair follicle and the application of a current adjusted to each hair

type and treatment area. Electrology is recognized by the FDA as the

only permanent hair removal method. Laser hair removal technology

became widespread in the US and many other countries from the

1990s onwards. It has been approved in the United States by the

FDA since 1997. With this technology, light is directed at the hair and

is absorbed by dark pigment, resulting in the destruction of the hair

follicle. The hair removal becomes permanent after one or more sessions.

The number of sessions needed depends upon the amount and type of

hair being removed. Equipment for performing laser hair removal at home

has become available in recent years.

Permanent hair reduction

Photoepilation * Laser hair removal (lasers and laser diodes)

* Intense pulsed light (high-energy lamps)

* Diode epilation (high energy LEDs but not laser diodes)

Destroying and denaturalization

of hair follicle

Photo energy → Thermal energy

Selective melanin absorption by 808nm

penetrating into hair follicle

Basic Theory of Diode Epilation

Laser

Energy

Absorption of laser light occurs selectively in

the melanin in the hair shaft

Photo energy is transmuted into Thermal energy

The hair follicle reaches a temperature sufficient

to cause irreversible thermal damage while the

Epidermis has remained below the damage threshold

Items Merits Demerits Remarks

IPL

Low cost Pain (high) Burn (high risk) Less effectiveness

1)Energy concentration on melanin is very poor because of its multiple wavelength 2)An adjacent tissue are damaged unnecessarily

Nd-YAG 1) Deep penetration up to 4mm 2) Less risk of burn

Less effectiveness 1)Energy concentration on melanin is very poor since it is affected by water absorption

Alexandrite

Possible to remove hair permanently

1)High cost for low charged patients 2)High running cost 3)Pre-heating required at least 10 min.

No profitable

Diode

1)Permanent hair removal 2)Fast depilation 3)Less pain 4)No consumable, no running cost

Simple to use Reasonable cost

Why hair removal by Diode laser ?

Important Factors to be considered on hair removal lasers

Permanent hair

removal

Wavelength(nm)

Absorption rate of

melanin

Pulse Duration(ms)

Thickness of hair

Fluence (J/㎠)

Efficacy of hair removal

Cooling Temp.(℃)

Safety of operation

For the best result of hair removal, laser energy should be delivered an absorbed

selectively on melanin with the higher thermal energy in the shorter time.

Comparison between laser versus light (IPL).

Wavelength(nm)

Laser Light

Wavelength Singular Plural

Melanin

Absorption

Selectively absorbed in melanin

through hair shaft up to follicle Destroy melanin and adjacent cells

Clinical effect

after treatment Minor erythema around hair treated. Burning on hair without erythema

Energy

concentration High Poor

Merits and

demerits

• Permanent hair removal.

• Less energy required due to its

high selective-absorption

• No risk of burn (on well shaved)

• Temporal hair removal

• High energy required as its complex

wavelength

• High risk of burn

Melanin Absorption Rate of lasers

1064

Nd:YAG

810

Diode

755

Alexandrite

694

Ruby

Intense Pulsed Light

Wavelength(nm)

What is TRT(Thermal Relaxation Time) ?

When laser beam is emitted into skin, thermal energy is transmitted in certain time and the

skin recovered from this thermal heat. This recovering time is TRT. In general, during TRT, the

thermal energy is reduced gradually, which mean it might not be good in clinical aspect.

Therefore, an ideal laser treatment should be done in TRT period or, before TRT.

Thickness of hair and TRT are proportionate. It requires to treat in various pulse

duration depend on thickness of hair !

Recommendation of treatment cases.

Thin hair : Power↑, PD↓(Short TRT) ⇒ Necessary High Power

Thick hair : Power↓, PD↑ (Long TRT) ⇒ Necessary Long Pulse Duration

Pulse Duration (ms)

For better efficacy, it requires high fluence relatively with a proper pulse duration time.

Some of diode lasers produce high fluence but, more than 30% of those energy are

scattered and, not delivered onto skin efficiently.

Fluence(J/㎠)

Laser

Diode

Sapphire

Tip

Laser

Diode

Focusing

Lens Array

Sapphire

Tip

Non-Collimation Method Collimation Method

Cooling System

Cooling part is one of the most essential components in diode laser system.

It enables to reduce pain during laser treatment as well as to maximize entire system’s

performance appropriately.

1. Patient’s pain relief

During treatment patients may feel prick or tingle. This is normal process of procedure by changing to

thermal energy from photo energy. Our cooling system relieves this painful feelings.

2. Minimize risk of side effects

With this cooling system, it is available to radiate with high fluence for better efficacy and patient

does not feel strong pain. Some of systems radiates high fluence with long pulse duration but , on the

other hand it exposures on high risks of burn or other side effects.

3. Maximize efficacy of hair removal

As result, the diode hair removal laser system is strongly required to have a good cooling performance

so that patients feel less pain, and thus it is available to emit properly high energy into hair shaft without

any risk of side effects.

Ideal hair removal system, EPICARE PLUS

• High power collimation

lens, Laser Diode

• Safe operation by

temp-sensor

• Fast depilation up to

10 Hz

• Powerful cooling

by Dual Chiller system

(up to -5 ℃ )

Repitition

; 1 Hz ~ 10Hz

Convenient Display

; wide 10.4” LCD Touch Screen

Energy Fluence

; 1~100J/㎠

Pulse Duration

; 10~350ms

Save Mode

; up to 5 frequent parameters

User friendly interface, EPICARE PLUS

Epicare Plus Specification

EPICARE PLUS SYSTEM

Light Source Diode (808nm) Cooling Type Contact Cooling

Optical Guide Sapphire Crystal Cooling Control STCTM (Up to 5℃)

Optical Energy Up to 100 J/㎠ Spot Size 12 x12 mm

Pulse Width 5.0~350ms adjustable

Dimension 400 x 420 x 800 mm

Pulse Mode Short and Long Weight 40Kg

Repetition Up to 10 Hz Electrical

Replacement

Free Voltage (110/220V), 50~60Hz