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How does the system work?
The energy from the light source is taken up by the pigments (Melanin
and Haemoglobin) in the skin, hairs and blood vessels. Selective
filtration makes the energy uptake specific for melanin (600 to 950
nanometres) or haemoglobin (530 to 950 nanometres); thus the system can
be used for hair removal, vascular lesions and pigmented lesions.
Hair removal is accomplished by the generation of heat from light in
the melanin, which is then transferred to the hair follicle (root).
Pulse times of this applied light have been chosen to destroy the hair
follicle by heating for at least 1millisecond (one thousandth of a
second) to 70 degrees centigrade.
Why is gel used?
It is necessary to apply a thin layer of gel to the skin prior to
treatment to assure an optimal optical transmission of light from the
applicator to the skin. The gel also provides a cooling effect
How is the treatment carried out?
The Applicator (hand-piece) is placed in contact with the skin surface
and the light pulsed through it onto the skin. The applicator is then
moved to the neighbouring area and the process is repeated.
Does it hurt?
As the light energy is absorbed by the pigments (melanin and
haemoglobin), the pain depends upon the concentration of melanin in the
epidermis and the hairs combined. Consequently it hurts more in dark
skinned people and those with dense, dark hairs.
No anaesthesia is required and most patients describe the pain as
moderate and acceptable (as if a rubber band is snapped against the
skin).
Does the patient need to shave prior to treatment?
Hairs should be 1 to 2mm long when the patient comes in for
treatment so it is possible to mark out the treatment area. Long hairs
take up the energy and prevent all of it reaching the hair follicle.
Therefore hair is trimmed just before treatment for maximum
transmission of the energy. If the hair is normally shaved and can be
seen when shaven then patients can shave right up to the day of
treatment although plucking and bleaching should not be done. By
avoiding epilation and waxing 4 weeks before treatment it ensures as
many follicles as possible contain a hair and thus can be destroyed by
the light.
Why do hairs 'grow' after treatment?
Contrary to other treatments, hairs are not vaporised by the Pulsar
treatment, the hair follicles are killed by the heat but the hairs
remain in the skin and often become attached to the epidermis.
They will fall out after 1 to 3 weeks as the epidermis is renewed.
During this period it will seem that the hairs are growing as the
epidermis pushes them out.
How many treatments are necessary?
Only hair in the growth phase can be treated. The number of hairs in
this phase varies from 10 to 70% depending on the body site. The
lengths of the growth cycles also vary. For most patients 4 to 8
treatments is sufficent to remove virtually all hairs. However this
can vary depending on hair colour,density of hair and treatment area.
Treatments are usually spread either one, two, or three months apart
depending on the area.
After the first treatment most patients get a significant reduction in
hair density also new grown hairs tend to become finer. It is important
to know that the first treatment is believed to synchronise the anagen
(growth) phase of the non-anagen hairs. This may cause what seems to be
re-growth but which is actually just the sleeping hairs starting to
grow at the same time (new growth). This in turn makes the next
treatment(s) more effective.
How do I prepare for treatment?
Patients should avoid tanning 1 month ahead of and during the entire
treatment scenario to avoid excessive discomfort from excessive light
absorption in the epidermis. Immediately after the treatment the skin
is particularly sensitive to UV light and strong sunlight should be
avoided for 4-5 days.
How long does a treatment take?
The facial treatment usually takes 10 minutes whereas both legs and an entire back take approximately 1.5 to 2 hours.
Is it permanent?
Most authorities would agree that using current laser and light
technology it is possible to permanently remove hair. Histology studies
have found destroyed and denatured hair follicle cells post treatment.
A recent study showed that the percentage reduction in hairs after one
treatment at 9 weeks was 52.6%
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