Introduction to biomechanics


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Skin Care and the Physiology of the Skin

The largest organ of the human body is thebacteria. Thus, our desire to sterilize the
skin. It protects our bodies from theskin also destroys beneficial bacteria, such
environment, maintains body temperature,as streptococcus mutans, and micrococcus
excretes waste matter, gives sensoryluteus . Toners, for instance, are
information to the brain and regulates bodybeneficial in keeping bacterial populations
moisture. We think about our skin more thandown, thus reducing acne flare-ups resulting
any other part of our bodies, and we manifestfrom microbes which invade and proliferate in
that attention by investing our emotions andthe pores. Overuse of anti-microbial agents
about 6 to 20 % of our disposable income intocan produce harmful results when too many
our skin (Lappe, 1996). It is worthy tobeneficial bacteria are destroyed, allowing
consider, then, how cosmetic products affectpathogenic bacteria to multiply unchecked on
our skin. In this article the psycho-socialthe skin. The skin also produces
impact of cosmetics will be examined as wellantimicrobial proteins, two of which are
as why cosmetics are deemed necessary. Thecalled defensins and cathelicidins, which
physiology of skin, how cosmetics affect skinincrease when the skin is damaged.
function and the effects of synthetic andPerspiration, necessary for the maintenance
natural cosmetic ingredients on the skin willof internal body temperature, also excretes a
also be considered.The Psycho-Social Impactgermicidal protein called dermicidin to
of CosmeticsOur society is preoccupied withcombat bacteria producing body odour.
the "culture of beauty" (Lappe, 1996) whichDeodorants also assist in keeping the
includes the notion that our skin must alwaysbacterial population down, thus decreasing
look young and appear free from blemish. Ourthe odours produced as they feed on the waste
psychological well-being is often closelymatter excreted by the sweat glands.
enmeshed with perceptions of how our skinResearch has shown that people who wash
appears to ourselves and others. We defineexcessively are more prone to infection and
our self-image to include the visibleeczema as a result of 'washing" away natural
representation of our skin to others, so as abacteria and germicides too frequently
result, it has become the "primary canvas on(Awake!, 2004).The Effect of Natural and
which our cultural and personal identity isSynthetic Cosmetic Ingredients on the SkinA
drawn" (Lappe, 1996). Cosmetic companies setnatural substance is any plant or animal
aside concepts of natural beauty so thatextract, rock or mineral which is obtained
flaws such as large pores, fine lines andfrom the earth (Antczak, 2001). An artificial
wrinkles are brought to the fore, influencingor synthetic substance is a substance which
our spending habits in pursuit of flawlesshas been modified through chemical reactions
skin.In the animal kingdom, most male speciesin an industrial process (Antczak, 2001). We
are endowed with colourful physicaluse a myriad of cosmetics on our skin, but
attributes so that a less colourful, butbefore we use these beauty aids, three
wisely camouflaged female mate will beessential questions should be asked:- What is
attracted to it. Humans do not havethe composition of the cosmetic?- Why is each
equivalent ornamentation, so women useingredient used?- Do the ingredients have
cosmetics, specifically make-up, to decoratepositive or negative effects on the skin and
their faces to attract prospective mates.Thebody? (See glossary at products claim to be
Need for CosmeticsA cosmetic is any substancesafe or even may appear to be safe, but
which, when applied, results in a temporary,beyond the short-term benefits of using the
superficial change (Anctzak, 2001). We use acosmetic, are there any long term effects
myriad of cosmetics on our skin, fromfrom daily absorption of its use? Skin used
moisturizers to lipstick. Make-up alters ourto be considered an impermeable barrier, but
visual appearance by enhancing our facialtransdermal drugs have proven that the
features through the artistic application ofopposite is true; the skin allows many
colour. It can beautify the face and be usedsubstances to pass through its layers into
to express our sense of self to others.the bloodstream.Several factors affect the
Make-up can hide blemishes, scars, under-eyerate with which the skin will absorb various
circles or even out our skin tone. It cancosmetic ingredients. The condition of the
boost self-esteem, make us feel moreskin, such as whether it is dry or damaged
attractive and increase our socialwill increase absorption. Cuts, acne or
acceptability in some social situations.abrasions also increase absorption. Other
Using make-up can contribute to aways to absorb cosmetic ingredients is to
well-groomed image, which positivelyinhale them, such as with hairspray or talcum
influences our confidence, self-esteem,powder, or through the mucous membranes.
health and morale.Skin care cosmetics treatMoist substances are most readily absorbed
the surface layer of the skin by providingand powders are absorbed the least by the
better protection against the environmentskin. Many products claim to address a skin
than skin left untreated. Creams treat theissue, such as acne or dry skin, but contain
skin's surface by imparting moisture to theingredients which exacerbate these problems.
skin cells on the outermost layer of theFor instance, acne treatments may contain
skin. It also forms a thin barrier whichcomedogenic, or pore-clogging ingredients.
traps moisture underneath, thereby preventingCreams that are supposed to treat dry skin
the evaporation of water from the skin'smay actually strip the skin of its natural
surface. Creams also accelerate theoils which are useful in preventing dryness.
hydration of skin cells on the outer layer,Some contain chemicals which seep through
giving the skin a temporarily smooth, plumpthe skin and dissolve skin oils and defat the
appearance. Exfoliants improve theskin (Lappe, 1996). A growing trend is
appearance of the skin by sloughing awaychemical sensitivity, which can develop at
flaky skin, blackheads and some dead skinany time, even after long term use of the
cells. Astringents improve skin tone andsame product. The ingredients in many
texture by swelling the pore walls so dirtcosmetics cause 20% of the population (U.S.
and debris do not collect within. Soapsdata, Erickson, 2002) to develop the symptoms
loosen particles of dirt and grime byof chemical sensitivity. Natural cosmetics
dissolving the greasy residue left on theemphasize more traditional skin treatments
skin from natural skin oils, creams andwith few of these harsh effects,
make-up.The Physiology of the Skin and Howacknowledging that short term beauty does not
Cosmetics Affect Skin FunctionSkin is made upbalance with long term hazards to health.The
of three main layers: the epidermis, thehealth of the skin is dependent on sound
dermis and the hypodermis. The epidermis isnutritional practices, healthy living and
the only layer we can see with our eyes andeffective, safe protection on its surface.
as we age, remarkable changes occur which areThe organic make-up co. can help you achieve
hidden from our view. For instance, the skinhealthy, radiant skin by offering a complete
gradually thins over time, especially aroundline of cosmetics and makeup composed of all
the eyes. Some cosmeceuticals can minimallynatural ingredients, with no animal,
re-thicken the skin, but the process ofsynthetic or petroleum-based ingredients.
thinning is inevitable. Elastin and collagen,Our products are made fresh for you once we
located in the dermis keep the skin resilientreceive your order, and contain preservatives
and moist, but with ageing these fibres breaksuch as d-alpha tocopherol (vitamin E),
down to create lines and wrinkles. Exposureascorbic acid (vitamin C) and other plant
to ultraviolet radiation accelerates thisoils with anti-microbial properties.We invite
process, and since few cosmetics can actuallyyou to give our natural products a try. Our
reach the dermis, the idea that a cosmeticcosmetics and make-up are developed on the
can reverse this process is unfounded. Thebasis of sound, scientific principles and the
best way to prevent fine lines and wrinklesphysiology of the skin. Our products will
is to limit our exposure to the sun andconvince you on their own merit, since they
ultraviolet radiation.The skin is a highlyare natural, vegan, and an excellent
complex, dynamic tissue system. One squarealternative to conventional make-up and
inch of the skin is composed of 19 millioncosmetics.Please contact us at for further
cells, 625 sweat glands, 90 oil glands, 65information.References:- Anctzak, Gina &
hair follicles, 19 000 sensory cells and 4Stephen, Dr., (2001). Cosmetics Unmasked,
metres of blood vessels (Lappe, 1996). TheHarper Collin, London.- Erickson, Kim,
outermost layer of the epidermis is called(2002). Drop Dead Gorgeous, Contemporary
the cornified layer, and is made of sheets ofBooks, USA.- Lappe, Marc Dr., (1996). The
keratin, a protein, and squames, dead, flatBody's Edge, Henry Holt & Co., New York.-
skin cells. It is our barrier againstPurvis, Debbie, (1989). The Business of
dehydration from the environment. It receivesBeauty, Wall & Thompson, Toronto.- Awake!
its primary supply of moisture from theWatchtower Bible and Tract Society of New
underlying tissue, since constant contactYork, Canada, February 8 2004.- Stryker has
from the external environment tends to drybeen researching and developing all natural
out the skin's surface. When the skin isskin care and make-up for the purpose of
exposed to dry conditions, the cornifiedoffering men and women safe, natural
layer can become dry, brittle, firm and ifcosmetics for everyday use. She brings to her
untreated, it can crack and lead toresearch a specialist in human biology from
infection. Creams create a waxy barrier tothe University of Toronto, coupled with a
prevent dehydration and keep the skin moistprofessional home economics degree and an
and supple. Underneath the cornified layereducation degree from the University of
lie six more layers of the epidermisBritish Columbia, fusing chemical and
responsible for cell generation. The lifebiological knowledge with food, family and
cycle of skin cells within this layer takestextile sciences.You may use this article but
approximately 28 days, so it may take threeany modification or publication of this
to four weeks to observe any changes at thearticle for fiancial gain must be approved of
skin's surface from using a new cosmetic.Theby the author. The author's name, Lori
skin surface is also home to millions ofStryker and her company's name, The Organic
healthy micro-organisms which increase ourMake-up Company, needs to by noted when used.
immunity to pathogenic, or disease-causing



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