laser and ipl technology
TRANSCRIPT
LASER AND IPL TECHNOLOGY
This Presentation Includes all the EBI Laser
Programs in one including:
Skin Anatomy
Laser Technology
Laser Safety
Laser Hair Removal
SKIN ANATOMY
Introduction
The skin is the largest organ of the body, accounting for about 15% of the total adult body weight.
It performs many vital functions, including protection against external physical, chemical, and biologic assailants, as well as prevention of excess water loss from the body and a role in thermoregulation.
The skin is composed of three layers:
Epidermis
Dermis
Subcutaneous Tissue
Skin Anatomy The epidermis is the topmost layer, and consists of a specific
constellation of cells known as keratinocytes, which function to
synthesize keratin, a long, threadlike protein with a protective role.
The dermis lies below the epidermis, and consists primarily of fibroblasts,
collagen, and elastic fibers. The dermis comprises the bulk of the skin
and provides its pliability, elasticity, and tensile strength. It protects the
body from mechanical injury, binds water, aids in thermal regulation,
and includes receptors of sensory stimuli.
Below the dermis lies fat, also called subcutis, panniculus, or
hypodermis. Considered an endocrine organ, the subcutaneous tissue
provides the body with buoyancy and functions as a storehouse of
energy.
Epidermis There are three main types of cells make up the epidermis:
Keratinocytes
Keratinocytes make up the majority of cells.
Keratinocytes are held together by macromolecular structures that look like stripes (or spines) between cells, called desmosomes (primarily visible in the spinous layer).
Melanocytes
Melanocytes are staggered along the basal layer at around one in every 10 keratinocytes.
Melanocytes are the pigment producing cells, and transfer their pigment, called melanin, to the keratinocytes in the basal cell layer.
Langerhans cells
Langerhans cells are dendritic cells found in the mid-epidermis
Their main function is in the afferent limb of the immune response by providing for the recognition, uptake, processing, and presentation of antigens to sensitized Tlymphocytes, and are important in the induction of delayed-type hypersensitivity.
Basal LayerWe will review the layers from bottom up, since that is the order in which epidermal cells mature over their
two-week life cycle from the basal cell layer to the stratum corneum.
They are then shed two weeks after reaching the stratum corneum (for a 28-day cycle). The cells
differentiate as they move upwards through the layers. The basal layer is the source of
epidermal stem cells. Cell division occurs here.
Keratinocytes start in the basal layer and move upwards.
Keratinocytes are the primary type of cell found in the epidermis. In humans, they constitute 90% of epidermal skin cells.
Keratinocytes play an essential role in protection, they form a tight barrier that prevents foreign substances from entering the body, while minimizing the loss of moisture, heat and other constituents.
Spinous Layer
Center of epidermis.
The cells in these layers
have lots of desmosomes,
which anchor the cells to
each other and contain
thick tufts of intermediate
filaments (keratin)
Has a “spiny” appearance
due to the desmosomal
junctions, which hold the
keratinocytes together.
Granular Cell Layer
Lipids are produced by the
keratinocytes in the granular cell layer
and secreted into the extracellular
space between the keratinocyte forms
a water barrier that keeps water in the
skin
Filaggrin is a protein found in the
granular cell layer of the epidermis.
Filaggrin retains water within
keratinocytes Filaggrin - an important
protein in barrier function
Mutations in filaggrin cause atopic
dermatitis and other atopic diseases,
such as asthma.
Stratum Corneum Made up of desquamating
keratinocytes.
Thick outer layers of flattened
keratinized non-nucleated cells provide
a barrier against trauma and infection.
You can think of the stratum corneum as
a wall of bricks and mortar
Bricks: flattened keratinocytes filled
with keratin and filaggrin
Mortar: lipid mixture, which surrounds
the keratinocytes and provides the
water barrier
DermisThe dermis provides a flexible but tough support structure. It is between 1-4 mmthick (depending on age and body location), making it much thicker than theepidermis. It contains the blood and lymphatic vessels and nerves which supply the skin, as well as sweat glands and hair follicles.
There are two layers within the dermis:
The papillary dermis is the uppermost layer of the dermis. It intertwines with the with the rete ridges of the epidermis and is composed of fine and loosely arranged collagen fibres. The papillary layer supplies nutrients to select layers of the epidermis and regulates temperature
The reticular dermis is the lower layer of the dermis, composed of dense irregular connective tissue featuring densely packed collagen fibres. It is the primary location of dermal elastic fibres. Within the reticular region are the roots of the hair, sebaceous glands, sweat glands, receptors, nails and blood vessels.
DermisThis is a biopsy from the scalp to
show the follicles and sebaceous
(oil) glands, found in the dermis.
Note the many hair follicles (yellow
arrow) running through the dermis.
Each follicle has associated
sebaceous or oil glands (blue arrow).
Yellow arrow – epidermis
Green arrow – reticular dermis
Cells of the Dermis
Fibroblasts
Fibroblasts reside in the dermis
Fibroblasts are responsible for the synthesis and
degradation of connective tissue proteins
Fibroblasts are instrumental in wound healing and
scaring
Mast Cells
Masr cells reside in the dermis
Mast cells are specialized cells that are responsible
for immediate-type hypersensitivity reactions in the
skin
Subcutis The subcutis, also called the hypodermis is the fat
layer which separates the dermis from deeper
underlying structures such as fascia and muscles.
The subcutis insulates the body, serves as an
energy supply, cushions and protects the skin, and
allows for its mobility over underlying structures
The subcutis consists primarily of loose connective
tissue and contains larger blood vessels and
nerves than found in the dermis.
Adnexal Structures
Adnexal structures include the
pilosebaceous unit and eccrine
gland
Pilosebaceous unit consists of:
A hair follicle
Sebaceous (oil) glands
Apocrine (sweat glands)
An arrector pili muscle (when these contract you get goosebumps)
Apocrine glands are found in the
axillary and anogenital areas, which
is why we do not see them on this
biopsy of the scalp. These glands
open directly in to the hair follicle.
Eccrine Glands
In contrast to apocrine glands, eccrine sweat glands do not
involve the hair follicle. They open directly onto the skin
surface and are present throughout the body.
Eccrine glands help regulate body temperature by excreting
sweat onto the skin surface, where cooling evaporation
takes place.
Eccrine glands are sometimes genetically absent, which will
predispose a patient to hyperthermia.
Review, Layers of the SkinThe epidermis is the purple stripe at the top of the biopsy, and is
noted with the red arrow. The reticular dermis is noted with the
green arrow. The papillary dermis is the thin bright pink band visible
just below the epidermis. The subcutis (fat) is the mostly clear area
in the bottom half of the image.
Functions of the Skin
Barrier function The skin provides a physical barrier that regulates water
loss and protects against mechanical, chemical and
microbial insults from the external environment.
Dysfunction of the skin barrier leads to injury,
dehydration, infection and inflammation.
Skin conditions such a atopic dermatitis, commonly
known as eczema, is an example of a chronic skin
condition associated with barrier dysfunction.
Functions of the Skin
Immunologic function
As an immunologic barrier, the skin both senses and responds to pathogens.
Dysfunction of the immunologic barrier leads to infection, skin cancer, inflammatory skin conditions and allergy.
Functions of the Skin
Temperature regulation
The skin helps maintain a constant body temperature with the insulating properties of fat and hair and through accelerating heat loss with sweat production and a dense superficial microvasculature.
Dysfunction of temperature regulation leads to hyper- or hypothermia. Another example of thermoregulation dysfunction is Raynaud phenomenon (chronic episodic attacks of digital ischemia provoked by exposure to cold).
COSMETIC LASER THERAPY
Laser therapy use precisely focused light sources (monochromatic coherent) to
treat or remove tissues and can be used for facial skin rejuvenation, medical
aesthetics, body contouring and hair removal
Compared to other procedures, cosmetic laser therapy have been found to be
better tolerated by patients, causing less discomfort.
Side effects include sensations like a prickly heat and can include slight facial
redness and swelling that may last for a few hours to days.
Facial Skin Rejuvenation Medical Aesthetics Body Contouring Hair Removal
Wrinkle smoothingOpen pore contractionFacial skin tighteningBroken capillariesSun damaged skinAge related brown spot removal
Wart removalAcne healingTattoo removalSpider Vein removalScar treatment
Fat reductionCellulite reductionLoose skin tighteningStretch marks reductionMeasurement reduction
Facial & body hair removal
COSMETIC LASER THERAPYLasers work in cosmetic applications through a process called
"selective photothermolysis." When broken down, means that it
modulates the frequency of light (photo) to produce heat (thermo)
in the specific area of the corresponding thing you wish to destroy
(lysis).
Selective photothermolysis was a concept developed by Rox
Anderson in 1983: “Laser Light of a specific wavelength can destroy
a target containing adequate chromophore without damaging the
surrounding tissue”
Laser / IPL is Non-ionizing radiations of light
❖ Non-ionizing radiation refers to any type of electromagnetic
radiation that does not carry enough energy per quantum to
ionize atoms or molecules.
❖ Non-ionizing radiation has sufficient energy only for excitation, the
movement of an electron to a higher state (thermal) that can
lead to structural changes.
COSMETIC LASER THERAPYCharacteristic of Laser Light
Laser Light
Laser only has one color
(monochromatic) and specific
wavelength
Each color has a specific
wavelength and frequency
Laser Light is coherent, meaning it
is a steady, focussed stream of
light. Its photons, or particles of
light energy, possess the same
frequency and its waves are in
phase with one another.
Ordinary White Light
Ordinary white light is composed
of different colors
(multichromatic)
Ordinary white light is non-
coherent, meaning the photons
do not have the same frequency
and the waves are not in phase
with one another
Laser and IPL Adjustment ParametersThere are four basic laser and IPL parameters:
1. Wavelength (WL):
Distance between two peaks
Measured in nanometers
Shorter wavelength = higher energy, more superficial
penetration
Longer wavelength = deeper penetration
Laser and IPL Adjustment Parameters
2. Pulse Duration (pulse width):
How quickly the energy is
delivered to the tissues
Measured in micro-, milli- or
nanoseconds
Longer the pulse, the more gentle
heating of target.
Laser and IPL Adjustment Parameters
3. Fluence:
Fluence = energy per area
Measured in Joules (J)
As fluence increases, so does the destructive force of
the energy
Typical fluences vary between 3 and 150 J/cm2
The relationship between fluence and spot size is
important.
Laser and IPL Adjustment Parameters4. Spot Size:
Dimension of the laser / IPL emission size
Spot size determines the area to be treated
Large spot size = deeper penetration/ decreased scatter
Small spot size = more energy absorbed in superficial
structures/ increased scatter
COSMETIC LASER THERAPY
Differences between Laser and IPL
❖ IPL uses a wide spectrum of wavelengths at the same time that can target any chromophore in that range
❖ Lasers have one wavelength with a specific target. Lasers can hit precisely one target with one shot whereas, IPL can hit several targets at once.
❖ Different wavelengths penetrate the skin to different depths, so using an IPL is like using a group of lasers in a single treatment
❖ Using IPL, the area that can be treated is larger and the treatment is faster
❖ The light from IPL is more scattered and less focussed than a laser.
COSMETIC LASER THERAPY
Fitzpatrick Classification Scale❑ Technicians administrating laser or photo (light) therapy must first assess
the patients skin type to determine the appropriate dose, which is, the
amount of exposure which will provide beneficial effect whilst
minimizing the damage incurred.
❑ The Fitzpatrick Classification Scale was developed in 1975 by
dermatologist Thomas Fitzpatrick, MD.
❑ This scale classifies a persons complexion and their tolerance to sunlight
❑ It is widely used by many practitioners to hair type for laser treatment
and to determine how someone will respond or react to facial
treatments
❑ Fitzpatrick skin type is governed by genetic factors and does not
change throughout their lifetime, despite changes to facultative
pigmentation (tanning)
COSMETIC LASER THERAPY
ContraindicationsWhile laser treatments are safe and effective for most women and men, there are some people that will not be good candidates for these types of treatments. Here is a general contraindications list:
Sun exposure and/or artificial tanning (during the last 4 (I/II/III) -8 (IV/V) weeks depending on skin type)
Pregnancy (or nursing)
Internal defibrillator or pacemaker
Skin Cancer
Epilepsy
Diabetes (unstable)
Accutane or any related acne medication (for a min 6 months prior)
Active Herpes in the treatment area (cold sore infection, etc)
Vitiligo (hypo-pigmentation) or any active inflammatory skin condition (eczema, etc.)
Lupus
Tendency of keloid type scaring
Porphyria
Types of Laser Machines
Ruby Laser Named after the amplification materials used
The Ruby laser is a solid-state laser that uses a synthetic ruby crystal as its
gain medium.
Ruby laser is the original and first system of laser hair removal. It is also
used to treat brown spots, tattoos, and pigmented lesions.
Ruby laser is suitable for those with fair or white skin and works best for
light and fine hair types.
Not a laser of choice for those individuals with tanned or darker skin or
those with white or light hair
Types of Laser Machines
DIODE LASER Diode Lasers use a single wavelength of light that has a high abruption
rate in melanin surrounding the hair follicle whilst not impacting the
surrounding tissue.
Made up of tiny diodes or semiconductors assembled together to
produce light.
Types of Laser Machines
DIODE LASER Diode laser has a longer wavelength than the Ruby lasers thus it is able to
penetrate deeper into the skin allowing treatment on dark-skinned people as well as white-skinned patients.
Diode lasers deliver high frequency, low fluence pulses and can be safely used on all skin types
Diode lasers are used commonly in the medical/dentistry field and is also used in numerous cosmetic laser treatments
Example of laser
depths for hair
removal
Types of Laser Machines
YAG Laser YAG Laser is named after the amplification materials used
YAG laser contains solid material made up of Yttrium,
Aluminum and Garnet. It is a crystal that is used as the
gain medium for solid-state lasers.
YAG is one of the most common types of laser used for
many different applications including cosmetic and
medical purposes.
Yttrium
Aluminum
Garnet
Types of Laser Machines
YAG Laser YAG lasers can be used to remove skin cancers and other types of malignant
tumours.
YAG lasers are used in commonly in the medical field and extensively for cosmetic purposes .
Absorbed more slowly by both melanin and hemoglobin, ensuring that its energy can penetrate deeply to reach both hair follicles and varicose veins in the darkest skin types, therefor suitable for Skin type V and VI on the Fitzpatrick scale.
When compared to other lasers, this laser is not effective on white or light hair and the treatments are more painful.
Types of Laser Machines
IPL IPL white light comprises a wide range of colors and wavelengths.
The polychromatic light can reach multiple chromophores in human skin
IPL uses a wide spectrum of wavelengths at the same time that can target
any chromophore in that range
Different wavelengths penetrate the skin to different depths, so using an IPL
is like using a group of lasers in a single treatment
Using IPL, the area that can be treated is larger and the treatment is faster
Laser Treatments
Recommended Number of Sessions1) Hair removala. 3-5 sessions required.
b. interval 3-4 weeks, because the hair has its own growth period and dormant
period, so it’s only effective to remove the hair in growth period.
2)Vascular therapya. 3-6 sessions required.
b. interval 3-4 week, because the human metabolism period is 3-4 weeks, the
stimulated capillary vessel tissues will be shrinking and steady along with the
metabolism.
3) Winkle removal repaira. 3-5 sessions required.
b. interval 3-4 week, because the human metabolism period is 3-4 weeks, the
stimulated collagen fiber tissues and flexibility fiber tissues will be steady along with
the metabolism.
Laser Treatments
Recommended Number of Sessions
4) Skin Rejuvenation
a. 3-5 sessions required.
b. interval 3-4 week, because the human metabolism period is 3-4
weeks, the stimulated collagen fiber tissues and flexibility fiber tissues
will be steady along with the metabolism.
5) Pigment treatment
a. 3-5 sessions required.
b. interval 3-4 weeks, because the human metabolism period is 3-4
weeks, some decomposed pigment cells are phagocytosed by the
lymphocyte, and expel from the body along with the metabolism.
Laser Safety ❖ Always refer to the user information supplied by the manufacturer
or distributer of the equipment, as well as any training resource material and related guidance documents
❖ The wavelength of lasers used in cosmetic skin procedures can pass through glass or windows and can be reflected off of metallic surfaces. All unnecessary reflective items, shiny tools, extra mirrors, jewelry, watches, etc. must be removed from the work table.
Laser Safety ❖ Even with protective eyewear, it is advisable to never look directly
into the hand piece, laser beam or scattered light from reflective surfaces.
❖ Treatment doors should remain closed and treatment windows should be covered with material of sufficient optical density to prevent laser light from escaping and reflective objects such as mirrors should be removed from the treatment room.
Laser Safety ❖ The exterior housing of a laser should never be removed, except by an
authorized service representative
❖ Oxygen and flammable substances should not be stored in a laser room. This
includes alcohol, acetone and flammable anesthetics.
❖ Eyewear is the single most important piece of protective equipment needed.
Both operator and patient must wear protective eyewear appropriate for the
wavelength emitted by the machine. The most important factor in selecting
eyewear is that it must protect against the wavelength emitted by the laser.
❖ No unnecessary idling of machine.
Laser Safety
❖ When choosing eyewear there are many options when working with lasers most commonly used for cosmetic lasers would be the red and orange as well as green styles of goggles.
❖ Your machine will always come with the correct type of goggles that are approved for that wavelength of laser you are working with. But it is a good idea to buy more just as back up.
❖ This guide is very specific and covers all types of goggles. Keep in mind some of these lasers are medical or industrial so you will not encounter them at the cosmetic level; but it will be the most complete visual of what goggles are best to use.
Laser Hair RemovalThe success and safety of laser hair removal is highly dependent on the
pigment present in both the skin and the hair of the patient being treated
❖ The key principal behind laser hair removal is matching specific wavelengths
of light and pulse duration to a specific target, namely melanin in a hair
follicle whilst avoiding the surrounding tissue area.
❖ Lasers target terminal hairs with the pigment melanin thereby, the intense
pulse of laser beam is absorbed primarily by the pigment in the hair follicle.
Laser Hair Removal
❖ Terminal hairs are thick, long and usually have much more
melanin/chromophore that absorb photon/thermal energy of the laser. Hair on
the scalp, underarms, genitals, eyebrows, chest, back, legs and arms are
examples of terminal hairs.
❖ Short and non-pigmented hairs that can be found in most other areas of the
body and face are called Vellus hairs.
❖ Each light pulse lasts only for a very small fraction of a second, so the energy
from the beam is almost completely absorbed by the hair papilla without
significantly spreading to the surrounding tissue.
Laser Hair Removal
❖Without a normal hair follicle, hair cannot survive and falls off.
❖ Lasers are most effective when target the hair follicle in its
active phase of growth cycle called Anagen (active phase).
❖ Destroyed hairs are either dissolved within the skin or rejected
by the body within the next several days.
❖ Successful laser hair removal is achieved by repeated
treatment since a portion of all hairs in the body is in the
Anagen phase at any given time. As a result some follicles are
destroyed, while others are partially traumatized, reduced to
fine hairs or subjected to extended quiescence.
Laser Hair Removal
❖Generally about 30% of hairs will not re-grow after a
single treatment. It is difficult to predict how many
treatments each individual will require to achieve the
best long term results. Therefore, multiple treatments are
needed to provide the best results.
❖ As a result, the FDA has approved laser treatment for
permanent hair reduction, and not permanent hair
removal.
HAIR GROWTH CYCLE
Anagen phase – period of growth. The cells in the hair bulb divide rapidly creating
new hair growth. The length of this phase is dependant on your maximum hair
length, which varies due to genetics, age, health and other factors.
Catagen phase – second phase of the hair growth cycle. This is a short transitional
phase, hair stops growing and detaches itself from the blood supply and is then
named a club hair.
Telogen phase - final stage in the hair growth cycle. This is the resting period where
the club hair rests in the root while new hair begins to grow beneath it.
Laser Hair Removal
Recap: The simple breakdown❖ Dark skin, hair and eyes contain a molecule called melanin.
❖ Melanin absorbs a wide range of wavelengths of light, especially in the ultra violet part of the spectrum. This makes it an ideal shield against the suns harmful rays which is why you get a tan when you go out in the sun (That’s your skin absorbing the rays so it does not harm your body and produces and releases more melanin in the skin)
❖ The melanin in dark hairs absorbs the laser light without the skin around it absorbing much of that energy. As the melanin absorbs the laser energy the hair heats up to well over 100 degrees Celsius causing it to burn and vaporizing the water it contains. The objective is to use the hair to destroy the germ cells in the follicle that produce the hair.
Laser Hair Removal
Recap: The simple breakdown
❖Cells suffer damage when their temperature rises above 60 degrees Celsius. This is because at that temperature the bonds and protein molecules start breaking apart. Process known as denaturation. The hotter it is and the longer that temperature is maintained, the more denaturation occurs and the higher the likelihood that cell will die. If you cause enough damage to the cells in the follicle that make the hair, the hair will never grow back
❖ The sequence of ultra short pulses is uses to ensure that the heat doesn’t spread too far into the region surrounding the hair. As the hair heats up it damages the germ cells and the laser light turns off before that heat can spread too much further, and then you hit the hair with another very short pulse again.
Laser Hair RemovalWHAT IS SHR?
SHR stands for Super hair Removal, a technology of hair removal which is having a
sweeping success.
The system combines laser technology and the benefits of the pulsating light method
achieving painless results.
SHR combined with “In-motion” represents a breakthrough in permanent hair removal
with light technology. The treatment is more pleasant than with the conventional
systems and your skin is better protected.
DIFFERENCE BETWEEN TRADITIONAL IPL & SHRTraditional IPL technologies employ short impulses of approximately 2-300 milliseconds,
applying a vast amount of energy (12-120 Joule on one square centimeter).
Energy is transported to the hair root through melanin, where warmth of 65-72 °C is
produced.
Energy reaches the root of the hair follicle solely through melanin.
Skin and red blood cells have a similar absorption coefficient as melanin and therefore also
absorb the high levels of energy produced by the IPL methods.
Laser Hair RemovalDIFFERENCE BETWEEN TRADITIONAL IPL & SHR
SHR technology, on the other hand, utilizes the melanin path only partially (50%),
it also influences the stem cells that produce new hair. Combining In-Motion
technology, it gently warms the skin helping penetrate down to the follicles which
produce hair growth.
Conventional devices, not using SHR technology, merely transport energy along
the melanin to the follicles.
SHR gently transports the energy through the skin and through the melanin to the
hair follicles.
Research has shown that a slower, but longer heating process is considerably
more effective for permanent hair removal than high and short levels of energy.
Laser Hair RemovalDIFFERENCE BETWEEN TRADITIONAL IPL & SHR
Therefore, when using SHR, The device is passed over the tissue multiple times (In-Motion) using low energy but a high rate of repitition (up to 10Hz, i.e. 10 times/second) instead of using the traditional method with multi, high-energy impulses.
Thus, the hair melanin, as well as the tissue of the stem cells, is heated with low energy at a slow pace and over a longer period of time to a comfortable temperature of 45°C.
Laser Hair Removal
RADIANT LASER
SETTINGS
This Section is specific to the
Radiant Laser ONLY and is
being taught as an example
on how to read each laser’s
settings!
The actual laser setting will be
gone through during your
course!
Laser Hair Removal
Client Consent Forms
Always take the clients
medical history and review
any pre-existing conditions.
Laser Hair Removal
Candidates✓ People with coarse dark hair and light colored skin respond best to laser hair
treatments.
✓ Clients with darker color that have more melanin in their skin, the skin tends to compete with the hair to absorb the light energy resulting in potential damage to the skin
✓ It is strongly recommended to avoid tanning prior to any laser treatments.
✓ People with grey hair are most difficult to treat as less energy is absorbed by the hair roots
✓ All parts of the body can be treated with the exception of the area immediately surrounding the eyes.
✓ In women, the most common areas are underarms, bikini line, chin, upper lip, arms and legs.
✓ For darker skinned patients, the YAG Laser and Diode Lasers are often the lasers of choice.
✓ For lighter skinner patients, the IPL has proven effective.
. : E t e r n a l B e a u t y C e r t i f i e d C o u r s e s : .EBI Program Related Courses:
. : Facial & Chemical Peels
. : Hydro, Oxygen, 24 Karat Gold & CO2 Facials
. : Dermaplaning & Microdermabraision
& PRP Microneedling
. : BB Glow Contour/Blush & BB Bundle
. : Laser Hair, Vein & Tattoo Removal
. : Radio Frequency & Cryo Laser
. : Micropigmentation Level 1 & 2
. : Microblading, Nano, Hybird & Powered
Brows
. : Botox L 1&2 and Dermafillers L 1&2
. : Micropigmentation Specialist Technician
. : Laser Specialist Technician
. : Lash Specialist Technician
. : Nail Specialist Technician
. : Clinical Skincare Technician