Important annoucement - Chemistry

Dear 3E2,

See you guys for extra lesson on 5 May (Wed) 2.30pm.

Jia you in your exam preparation!

Eat well and sleep well too!

Cheers,
Mrs. Yeoh

Wednesday, April 21, 2010

CHEMISTRY - Option 1: Antiperspirant VS Deodorant










WHAT CAUSES BODY ODOR?

There are many causes which will leads to body odor. Some examples are – diet, gender, occupation, mood, health, medication and genetics.

Occupation and mood: wrecked promotion prospects at work, educational under – achievement because of teasing and bullying along with huge degrees of stress which is blamed for their frequent progression into alcoholism, immoderate tobacco or drug use in some cases to suicide.

Health: sometimes may be link with fixed health problems such as liver dysfunction, diabetes, digestive problems (parasites, etc) and yeast infections.

Diet: If the lively micro-organisms are unbalanced through use of medication (antibiotics and steroids in particular) or a high fat, high sugar, high red-meat, low fiber diet the lively role they play in detoxification of the bowel and in manufacturing important nutrients is impaired and this can exacerbate the condition of body odor, as well as to numerous other health problems.

Gender: In women, menstruation and stress often cause dramatically increases the degree of body odor experienced and careful attention to personal hygiene and dietary excellence is needed.

WHEN IT COMES TO DEODORANTS OR ANTIPERSPIRANTS, WHICH ONE REALLY WORKS? HOW DO THEY WORK?

· Antiperspirants contain fragrance and contain a chemical compound that blocks the pores to stop the discharge of perspiration. There will be NO sweat, NO odor.

· Deodorant allows the release of perspiration, but prevents odor by combating it with antiseptic agents, which kill odor-causing bacteria.

DEODORANTS.

Perspiration itself is almost unscented. Most of the odor that accompanies perspiration is caused by the action of bacteria. Deodorants reduce this odor in one of the three ways: by preventing the action of bacteria on the perspiration, by preventing the secretion of perspiration, or by masking the offensive odor with a pleasant one.

Deodorants that kill or inactivate bacteria contain antiseptic substances, such as alcohol, formaldehyde, and boric acid. Chlorine compounds, e.g. hypochlorite and chlorhexidine, work by killing bacteria which may be responsible for the odor. Deodorants that mask perspiration odor contain perfumes. Essential oils and such disinfectants as carbolic acid simply mask the odor, making it less offensive.

ANTIPERSPIRANTS.

Deodorants that prevent the secretion of perspiration are called antiperspirants. They usually contain an aluminum salt, such as aluminum sulfate, that acts by blocking the pores preventing the free flow of sweat.

Aluminum-based antiperspirants work by blocking the sweat ducts, thereby reducing the amount of sweat that reaches the skin’s surface. Aluminum salts are soluble as long as the formulation is acidic (low pH). When they are applied to skin and come in contact with sweat, the pH rises causing the aluminum salts to precipitate out and form a plug over the sweat glands. Sweat continues to be produced by the sweat gland but it just isn't able to reach the surface of the skin.

Diphemanil methyl sulfate is a drug that opposes the action of the parasympathetic nerves that control sweat production.



WHAT IS/ARE THE ACTIVE INGREDIENTS PRESENT IN EACH THAT HELP TO BATTLE BODY ODOR? WHICH ONE IS SAFER?

Healthcare professionals recommend deodorant over antiperspirant as they believe that obstructing pores and preventing perspiration may not be the healthiest choice.

Aluminum compounds or aluminum salts, such as aluminum oxide (Al2O3), are key ingredients in almost every antiperspirant. They are powerful astringents that close pores, stopping sweat and odor from escaping the body.


The active ingredient of the product consists of any of the following within the established concentration and dosage formulation. Where applicable, the ingredient must meet the aluminum to chloride, aluminum to zirconium, and aluminum plus zirconium to chloride atomic ratios described in the U.S. Pharmacopeia-National Formulary. The concentration of ingredients in paragraphs (b) through (j) of this section is calculated on an anhydrous basis, omitting from the calculation any buffer component present in the compound, in an aerosol or no aerosol dosage form. The concentration of ingredients in paragraphs (k) through (r) of this section is calculated on an anhydrous basis, omitting from the calculation any buffer component present in the compound, in a no aerosol dosage form. The labeled declaration of the percentage of the active ingredient should exclude any water, buffer components, or propellant. Sweating is nature’s way of lowering the temperature of body and prohibiting this by blocking the pores is not ideal. Also, the aluminum compounds in the antiperspirants are not healthy friendly stuffs. Antiperspirant increases danger of breast cancer, especially if it’s applied their underarms.

Deodorants contain parabens which believe to cause breast cancer.



VIDEO LINKS :

http://www.youtube.com/watch?v=B7dS3DNR3e8

http://www.youtube.com/watch?v=KmaifIyLRV4&feature=related




DONE BY : YUNQI (o8)

1 comment:

jesslynseehwee said...

A detailed research, good job done.

Mrs. Yeoh