Antiperspirant spray principle

As the temperature slowly rises, the human body sweats more and more. However, some people are born with more developed sweat glands, so no matter what season it is, they will sweat profusely after a little exercise. Some people do not sweat much unless the weather is hot. In daily life, fatter people generally sweat more than thin people. In order to prevent odor from sweating, many people use antiperspirant spray to prevent sweating.

Sweat is secreted by sweat glands, which are divided into eccrine sweat glands and apocrine sweat glands. Small sweat glands are basically distributed throughout the body and are mainly used to regulate body temperature; large sweat glands are mainly distributed in the armpits, private parts and other places. The sweat secreted is a white, sticky and odorless liquid, but once it comes into contact with bacteria on the skin surface and is difficult to evaporate due to lack of ventilation, it will produce a special smell. If the secretion is excessive, the odor will be stronger, and even body odor may occur. Although sweat from the armpits only accounts for 1% of total sweat, it is the main source of sweat odor.

If you want to completely get rid of sweat odor, you need to destroy the sweat glands and hair follicles through surgery. However, except in extremely serious cases, Meijie does not recommend surgery. In fact, using antiperspirants will be enough.

Many people worry that using antiperspirants to suppress sweat will affect their health. In the past, antiperspirants were quite irritating to the skin and clothing, but now there is no need to worry about problems such as clogging pores or causing side effects.

In fact, the main ingredient of antiperspirant is aluminum salt that can absorb sweat from the body surface. Secondly, it contains antibacterial ingredients such as tea tree essential oil. It reduces the amount of sweat flowing to the skin surface and inhibits bacterial reproduction, thereby eliminating armpit body odor.

Antiperspirant spray is a type of refreshing body deodorant. Take the professional refreshing body deodorant - Rexona as an example. Its refreshing ingredient is sweat-absorbing micro salt. It cannot enter the deep sweat glands and only acts on the surface of the skin. Its working principle is to absorb sweat and keep the skin surface dry, just like the talcum powder used by babies, which will absorb excess moisture and stickiness without causing any burden on the skin.

Moreover, the refreshing ingredients acting on the surface of the skin will be easily washed off during bathing, so it is recommended to use;

Why can antiperspirants stop sweating? What is the functional principle of antiperspirants?

Antiperspirants contain aluminum salts and zirconium, which can block and destroy sweat pores, thereby inhibiting sweat gland secretion. Antiperspirants generally come in three types: spray, roll-on, and cream. Currently, there are antiperspirants on the market that emphasize their ability to prevent sweat and stop perspiration. Their main ingredient is aluminum salt. Through the application of aluminum molecules in aluminum salt, the outlet of the human body's sweat ducts can be blocked, thereby improving the sweating situation. The effect is quite good, but antiperspirants are only suitable for a few parts of the body, such as the armpits, face, etc. The disadvantage is that the maintenance effect is limited and the effectiveness period is not long.

The most likely harm caused by using antiperspirants to the human body is inflammation, especially antiperspirants with added fragrances, which are more likely to cause skin discomfort to some people who are allergic to fragrances. Therefore, he said that people with allergies should choose pure antiperspirants without added fragrances. Dr. Chen Yanliang, chief physician of the Department of Dermatology at National Taiwan University Hospital, recommends that people who are easily sensitive should choose antiperspirants instead of cosmetic products and focus on drugstore products. As for how to use it, it is best to wipe it once every night before going to bed. In this way, after two to three weeks, the aluminum salt can temporarily block the sweat glands and maintain the effect for one to two weeks.

Women who have shaved their armpit hair can use spray-type antiperspirants, because the armpit hair has been removed and the spray can fully cover the armpit skin; but men who still have armpit hair need to use rollers or cream antiperspirants that are applied directly to the armpits, which are more effective.

Most antiperspirants sold on the market contain this ingredient, or similar "aluminum salt preparations" antiperspirants, such as aluminum chloride or aluminum hydroxide.

The principle is to use aluminum molecules to combine with sweat and swell, blocking the openings of sweat glands to inhibit sweating. The higher the concentration of aluminum chloride hydrate, the better the anti-sweat effect. However, higher concentrations may also cause residual defects, so the concentration is generally between 20% and 30%.

However, this is only effective for a small amount of sweating. If you sweat a lot, the effect will be less effective.

And it must be used when it is dry, otherwise it will be washed away and become ineffective.

A while ago, there was an online rumor that using this antiperspirant would cause breast cancer, but it was later confirmed to be nonsense. There is also a report saying that a British university study showed that antiperspirants containing preservative ingredients Parabens (hydroxybenzoic acid esters) may cause breast cancer, but most antiperspirants do not contain this ingredient, while this ingredient is commonly found in shampoos and even in eye drops that come into contact with mucous membranes. But this should also be a rumor, otherwise more than half of the products on the market may be carcinogenic.