First let's talk about perspiration.
Perspiration itself is almost odorless. Most of the odor that accompanies perspiration is caused by the action of bacteria. Deodorants reduce this odor in one of 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. There are 26 allergens commonly found in fragrances and essential oils . Make sure to choose a deodorant which is fragrance-free.
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.
Most conventional deodorants and antiperspirants contain several ingredients linked to serious health effects, from Alzheimer's disease to virulent cancers. Since deodorants and antiperspirants are designed to stay on our bodies for hours, this allows the potential for more harmful chemicals to be absorbed through the skin.
Antiperspirants work by clogging, closing, or blocking the pores with aluminum ions so they cannot release perspiration. Aluminum is a hazardous material that the FDA allows to be added to body care products in regulated amounts. There is no proof that these "regulated amounts" of what is essentially poisonous to the human body are actually safe. Arguments against the use of aluminum emphasize the fact that aluminum accumulates in the brain over time and may contribute to Alzheimer's disease and breast cancers.
It's up to you to choose the best and safest product for your body.
Many alternative options can protect you from exposure to unnecessary, harmful ingredients and still leave you smelling fresh and feeling confident.
Apple cider vinegar eliminates under arm body odor when used in place of deodorant because it reduces the pH of the skin. Bacteria can't live in areas with low pH. Just dab it on with a cotton pad.
Baklng soda, the odor-eating standby, can be used instead of deodorant. Just apply the powder to your dry armpits with a wad of absorbant cotton. It will kill bacteria and help absorb perspiration.
Personally I prefer a natural crystal deodorants are made from potassium alum, which is a naturally occurring sulfate mineral which typically occurs as encrustations on rocks.
Potassium alum is a natural anti-microbial, and acts as an anti-bacterial agent, which means that when it comes in contact with bacteria, such as bacteria in sweat that is responsible for body odor, it inhibits its growth. Therefore, odor is prevented, and the body is able to maintain its proper course of eliminating toxins through sweat, as well as controlling body temperature, all without odor.