In
this youth-obsessive era, people fight ageing with every fibre of their
being. From cosmetic procedures to ‘lifting’ the eyelids, to ‘wiping
off’ of crow’s feet from the corners of the eyes and the mouth, not to
mention chest augmentation, etc., many people would do anything to
remain youthful-looking.
While
we may succeed in rejuvenating the skin around the face and neck with
costly body creams and surgical intervention, the hairs in the body
usually refuse to cooperate. As such, by the time the average person is
35 years old, gray hairs would have started sprouting up in some parts
of the head.
For
sure, it’s not only the hairs on the head that go gray, as the hairs on
the arms, eyelids, the brows, legs and… (you know where else) gradually
lose their natural shine and lustre, turning unattractive and becoming
hoarse as they turn grayish.
Researchers
say your chance of going silvery increases 10-20 per cent every decade
after you hit age 30. In essence, therefore, we all have a date with
hoary head; only that gene, stress levels and other factors predispose
individuals to when they develop gray hair.
But
then, imagine getting older without developing leaden hair! This is the
assurance coming from English scientists who studied 2,411 patients by
examining the activities of hydrogen peroxide in the hair.
In
the new online research report published in The Federation of American
Societies for Experimental Biology Journal, researchers at Bradford
University’s School of Life Sciences say those who go gray develop
“massive epidermal oxidative stress” through the accumulation of
hydrogen peroxide in the hair follicle, causing their hair to bleach
itself from the inside out.
Professor
of cell biology at the University of Bradford in England, Dr. Desmond
Tobin, suggests that hair turns gray because of age and genetics. He
notes that genes regulate the exhaustion of the pigmentary potential of
hair follicles. For some people, he says, the process occurs rapidly;
while in others, it occurs slowly over several decades.
Scientists
say various factors make hair grey. They include genetic defects,
hormones, body distribution, age, climate, pollutants, toxins and
chemical exposure.
To
beat the gray, people resort to dying their hair. And, unlike other
beauty treatments that are exclusive to women, both sexes indulge in the
war against argentine head.
The
hair dye industry is a multi-billion-dollar business globally, and the
market is burgeoning with choice of various shades, which can be in form
of powder, liquid or cream.
Experts
say hair dyes may be temporary, covering the surface of the hair but
not penetrating into the hair shaft. They generally last between one and
two washings. Dyes may be semi-permanent, in which case they don’t
penetrate into the hair shaft and typically lasts between five and 10
washings.
Permanent
(oxidative) dyes cause lasting chemical changes in the hair shaft, and
are the most popular among users because the colour changes last until
the hair is replaced by new growth.
Hair
treatment specialist and salon operator, Mrs. Tinu Oladele, says the
dye “restores the hair’s original colour, makes it shine, while it also
gives hair a kind of hitherto elusive fullness that makes you look
younger than your real age.”
Well, cosmetologists may give hair dye thumbs-up, physicians say dying your hair poses certain health risks.
Professor
of Anatomy and Consultant Endocrinologist, Oladapo Ashiru, says some of
the ingredients in hair dyes can cause allergic reactions that may
result in severe skin and eye irritation in some people. He notes that
eye irritation can seriously affect vision and, very rarely, lead to
blindness.
Experts
also note that hair dyes can actually cause hair loss in some people.
In addition, Ashiru says certain ingredients in hair dye could make
users develop cancer of lymph tissue (Hodgkins disease), or cancer of
plasma cells (multiple myeloma, affecting the bones, immune system,
kidneys and red blood cell count).
Data
from America’s National Cancer Institute suggest that the use of hair
dye has an association with chest cancer, as the ingredient,
para-phenylenediamine, found in nearly all hair colouring products, was
shown to be carcinogenic to the chest.
The NCI data also claims that both men and women hair dye users are at “heavily increased risk” for bladder and other cancers.
As
for women, using certain hair dyes shortly before pregnancy or while
pregnant heightens the risk of cancer in their babies by as much as
10-fold, experts warn.
Experts
also reveal that almost 70 per cent of the hair colouring products
contain coal tar, which can be easily absorbed through the skin and
trigger allergic reactions.
To
save hair dye users from these health problems, the Bradford team says
it has discovered that accumulation of hydrogen peroxide — which leads
to graying — can be remedied with a proprietary treatment.
They
describe the preparation as “a topical, UltravioletB-activated compound
called PC-KUS (a modified pseudocatalase.” UVB is also used
therapeutically for treatment of skin disorders like vitiligo that
causes a loss of pigmentation.
Since
the scientists have yet to tell us when their product will hit the
market, the United States Food and Drug Administration advises people
who want to dye their hair but are concerned about safety to follow
these suggestions:
• Consider delaying dyeing your hair until later in life when it starts to turn gray
• Consider using henna, which is largely plant-based
• Be sure to do a patch test for allergic reactions before putting the dye in your hair Do a patch test before every use
• Carefully follow the directions on the hair dye package
• Wear gloves when applying hair dye
• Don’t leave the dye on your head any longer than necessary
• Rinse your scalp thoroughly with water after use
• Never mix different hair dye products, because you may cause potentially harmful reactions
• Never dye your eyebrows or eyelashes
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