Skin Resurfacing – Carbon Dioxide and Erbium:
YAG Lasers Laser treatment is the high
tech equivalent of dermabrasion and chemical peels, and is mainly performed
with the carbon dioxide or Erbium YAG lasers. Although carbon dioxide
lasers have been in medical use since the 60's as cutting tools it is
only in the last few years that technological advances in laser design
have allowed the laser beam to hit the skin surface for less than the
“thermal relaxation time of skin” i.e. 695 microseconds allowing controlled
vaporisation of skin with minimal unwanted "collateral" heat damage.
Skin resurfacing is used principally for
| Elimination of fine wrinkles
Improving scars (acne, chicken pox or trauma)
Improving the appearance of photo damaged skin.
Removal of some skin lesions (epidermal naevi /congenital pigmented
naevi). |
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The results of these latter treatments depend on the depth of lesion.
Generally deeper respond poorly.
The advantage of laser skin resurfacing over dermabrasion and chemical
peels, is in more accurate depth control with laser treatment. Distinct
colour changes occur as the laser injury becomes deeper. This is a helpful
indicator to monitor treatment during surgery and lets the surgeon know
when the end point is reached - and treatment is finished.
Carbon dioxide lasers vaporise skin in layers of about 65 microns with
a zone of "collateral" damage of about 75 microns. Erbium YAG lasers vaporise
about 25 microns with a zone of "collateral" damage of about 5 microns
i.e. Erbium YAG laser produces less tissue damage and is potentially safer.
These figures will vary with different power settings. Less tissue damage
occurs with pulsed laser beams, which improves safety margins further.
These newer pulsed carbon dioxide and Erbium
YAG lasers tend to give shorter periods of skin redness although
redness does vary with the depth of injury and also between different
individuals. Although the redness can be distressing it is associated
with the formation of new collagen, which is important to the long
term result of laser resurfacing.
New collagen formation seems to continue for about one year. |
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Many resurfacing procedures require repeat treatments to get the best
result and many patients are happy in order to have a shorter period of
redness a more shallow treatment is required and accept that they may
need an extra treatment to eliminate the cosmetic problem.
There has been some adverse publicity related to laser treatment. Whilst
this has been the result of inaccurate reporting in some cases suitable
patient selection and counselling is vitally important.
All patients will have a raw, weeping, uncomfortable
superficial burn for about one week.
Treatment in this initial period may either be open, with regular cleansing
and the application of Vaseline to keep the wound moist, or alternately,
closed with dressings. Infection of the superficial burn - bacterial,
viral or fungal - could potentially cause scarring if not promptly treated,
although this is rare.
Skin erythema (redness) will last for 5 weeks to 6 months depending on:
- which laser is used
- the depth of injury
- individual variation.
Blushing may cause increased redness in the treated area even after this
period.
Complications of Laser Skin Resurfacing
Treatment:
Skin Colour
Skin darkening (Hyperpigmentation) may be a problem
particularly in darker skin types and is related to the post laser inflammation.
It is important that patients with darker skin types are treated with
a test patch in a hidden area to test for hyperpigmentation before treatment
commences on the face.
Skin Lightening (Hypopigmentation) may occur if the resurfacing has damaged
the pigment cells melanocytes. This is more common with carbon dioxide
lasers. If hypopigmentation persists in the long term cosmetic make-up
may be required to maintain cosmesis.
Skin Infection
Acne may flare up in susceptible individuals and require
treatment.
Cold Sores
Acyclovir should certainly be given to patients with
a history of cold sores, as laser treatment may activate the cold sore
virus. If this occurs infection may be severe involving the treated area
of skin. For this reason some surgeons give acyclovir to all patients.
Antibiotics given prophylactically can lead to infections with resistant
bacteria and as in accidental burns antibiotics are not routinely given
unless there is evidence of infection.
Skin Care Products - Enhancing Results
Pre and late postoperative skin care with Retin A or
alpha hydroxy acids may enhance results and can be combined with hydroquinone
in patients at risk of hyperpigmentation.
Corticosteroids have been used particularly in the U.S.A. to limit erythema
although as noted above the inflammation which causes erythema may in
fact enhance the long term results.
Postoperative Care – Laser Skin Resurfacing
Skin Care
Following a skin resurfacing procedure, using either
a pulsed CO2 or Erbium YAG laser, your skin will appear red and weepy.
It will take between five to seven days before your skin heals and, during
this time, it is very important to remove any crusts that may build up
on your skin. Most patients find Vaseline, applied two hourly during the
day time, to be the most effective and soothing topical medication at
this stage. For the first two or three nights after the skin resurfacing
procedure, you may find that Vaseline gauze applied to the treated skin,
after it has been first liberally covered with Vaseline, would be the
most soothing dressing.
Once the skin has healed, small crusts that have developed can then be
removed gently, using water containing a little white vinegar. This can
be prepared by adding five or six drops of vinegar to a cup of water at
a comfortable temperature as far as the skin is concerned.
Some pinpoint bleeding after an Erbium YAG resurfacing procedure is normal
and usually doesn’t cause any great problems. It is important to remove
dry blood from the face to minimise the risks of infection.
General Anaesthetic
If you have had a General Anaesthetic, it is important
that you do not drive for 24 hours and that, when you go home, there is
someone at home all the time for at least 24 hours to look after you.
Swelling
Please note that it is quite usual to get some swelling
around the eyes, particularly if the resurfacing procedure has been carried
out in this area. This may take three or four days to disappear.
Infection
Infection of the skin following a skin resurfacing procedure
is rare and often antibiotics are not required. It is important to continue
taking Acyclovir for the full five day course if you are prone to cold
sores on the face. Otherwise, this treatment is not necessary, although
a small proportion (about 6%) of treated patients without a history of
cold sores may develop this complication. It is very important to let
your doctor know if you develop any blisters or pustules in the treated
area.
Sleeping
If you are not a good sleeper, you may find that you
will need to take a sleeping tablet for two or three nights to help you
sleep after an extensive facial resurfacing procedure.
Family
It is very important that you let your partner or your
family know that you are having a resurfacing procedure carried out; otherwise
your appearance may give your partner quite a shock!
Make-Up
It is best not to put on any make-up until at least ten
days after your skin has healed. This is because the skin is readily sensitised
following a resurfacing procedure to anything potentially sensitising
such as cosmetics applied to it.
Skin Redness
Please note that the redness that follows a skin resurfacing
procedure is entirely normal. This is always much more marked following
the use of the CO2 laser than with the Erbium: YAG laser and persists
much longer. The redness can be very marked, especially in fair skinned
individuals and can persist for up to three or four months following the
procedure. It is nothing to be alarmed about and, in exceptional circumstances,
can be treated using another laser called the Pulsed Dye Laser if individual
patients find it aesthetically displeasing.
Retinoic Acid
It is known that the beneficial effects on your skin
of the resurfacing procedure can be augmented and perpetuated by the regular
use of retinoic acid topically. Most patients can begin this treatment
once daily each evening to the facial skin about three weeks after the
skin has healed. Once more however, fair skinned individuals with delicate
white skin may have to wait much longer before they can use retinoic acid.
UV Blocking Creams
It is important to use an Ultraviolet light blocker on
the skin on a regular basis, beginning about ten days after the skin has
healed. This is best applied each morning and should be used regularly
thereafter. Your Consultant will advise you on which strength of ultraviolet
light blocker is required in your individual case. The regular use of
an ultraviolet light blocking cream on the skin minimises the risk of
the development of pigmentary change in the treated area, but the risk
of skin darkening after a resurfacing procedure carried out with the Erbium:YAG
is much less than with the pulsed CO2 laser.
Wrinkles - may take 6-10 months to disappear
Please note that the best results after a resurfacing
procedure are seen 6 - 10 months after treatment and are due to new
collagen formation under the site of your wrinkles or acne scarring.
Do not feel despondent because you can still see wrinkles or scarring
immediately after your treatment. Your laser resurfaced skin will usually
continue to improve with time up to ten months after the procedure.
Skin Type

Photorejuvenation
Intense Pulsed Light (IPL)
Intense Pulsed LightTM (IPL) skin treatments using the photorejuvenation
process represent a breakthrough in skin care. This new technique treats
sun damaged skin invasively — there is no disruption of the skin's
epidermal surface. IPL treatments address the effects of photoageing
and sun damage with low risk of complications and no recovery time.
IPL produces dramatic results for a variety of benign conditions, including
:- 
Whilst comparatively aggressive Laser resurfacing and deep chemical
peels produce excellent long term results, these treatments produce
significant redness and swelling which take from 2-6 weeks to subside.
Microdermabrasion addresses skin irregularities, but is not effective
against all complexion problems including redness, flushing and broken
capillaries. IPL is less aggressive in tackling some of these problems
and is the fastest growing cosmetic procedure in the U.S. and now Europe.
Practitioners determine an IPL treatment plan for each new patient,
accounting for the number and severity of skin conditions being treated,
as well as skin type. On average, four to six treatments are recommended,
scheduled at three-week intervals. Each session usually lasts about
20 minutes, with patients returning to normal activity immediately afterwards.
IPL treatments provide gradual, natural improvement with excellent long-term
results.
What to Expect
Before treatment, a cold gel is usually applied to the areas to be
treated and patients wear protective eyewear. During treatment, a physician
or trained staff member gently applies the smooth, glass surface of
the IPL handpiece to the skin. Light is delivered to the skin surface
in precise pulses that are typically pain-free. Occasionally some signs
of treatment, such as redness, can last for one or two hours. In most
cases, the entire face is treated, but the therapy can also work well
on the neck, chest and hands. Results from a full series of treatments
usually last for a year or more.


IPL Procedure
Before treatment, a cold gel is usually applied to the area to be treated,
and patients are given protective eyewear. During treatment, the smooth,
glass surface of the IPL handpiece is gently applied to the skin, delivering
precise pulses of light to the area being treated. IPL treatments are
usually pain-free, but an anesthetic cream can be used if the light
pulses are uncomfortable. Some patients compare the sensation to a light
pinch or the snap of a rubber band. Treatment sessions usually last
about 20 minutes, and a complete program usually includes four to six
sessions.
After treatment, patients can immediately return to normal routines
and activities. Occasionally evidence of treatment such as redness or
blotchiness may last for an hour or two.
Why are multiple treatments necessary?
Several IPL treatments are required to provide gradual, natural-looking
improvement with very low risk. Results usually last a year or more.
Complications of IPL
The main problem is one of de-pigmentation which may have an adverse
effect on patients with a pigmented complexion. This is the main limiting
factor of the therapy, and test treatment patches help to identify those
patients at risk from this treatment. A possible solution to this problem
is ELOS therapy.
Electro-Optical Synergy (ELOS)
ELOS Technology
Syneron's ELOS technology maximizes the synergy of conducted radiofrequency
energy (RF) and optical energy.
RF energy has limited effectiveness in hair removal and treatment of
skin disorders. Combined with optical energy ELOS provides an exceptionally
effective, safe and affordable method for a broad range of medical aesthetic
treatment applications including

Syneron's Galaxy ELOS Machine
How ELOS works:
Optical Energy - Selectively absorbed by vascular and
pigmented lesions
Electrical Energy (Conducted RF) - Does not affect
the melanin of the epidermis
-
Selectively heats hair follicles and bulge, blood
vessels, and deep pigmented clusters
-
Effective for heating deep collagen and connective
tissue
ELOS Technology
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Uniform temperature distribution across hair shaft
and follicle (for hair removal)
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Minimal effect on epidermis
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Greater treatment depth than optical energy alone,
without causing skin damage
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Parallel selective heating of different lesions
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Cooling protects epidermis from overheating
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Fully controllable - maximum effectiveness with
minimal side effects
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