Summer, sun, heat - and the sweat trickles. The safest way to protect yourself from unpleasant odors and unsavory stains under the arms are Deo & Co. But what should be considered? Sweat serves as a temperature compensation to protect the body from overheating. Depending on predisposition and size, a person has two to five million sweat glands. Most sit on feet, hands and on the forehead.
Sweat glands of man
Two different sweat glands play a role in sweat production:
- The so-called eccrine gland produces a liquid that is about 99 percent water and relatively odorless.
- The apocrine gland secretes mainly metabolic products. These are broken down by bacteria that are located on the skin surface. And at the same time there is an unpleasant smell.
How sweat smells and how pronounced sweating varies from person to person. Some excrete little fluid, but increased metabolites. Accordingly strong sweat smells. Others sweat a lot, but hardly smell, because the apocrine glands are less active. The decisive factor is the trigger for welding flux.
In sports, especially the eccrine glands excrete fluid, in fear, shame or sexual arousal work the apocrine glands. All this explains why a deodorant does not always work the same way.
Deodorant and antiperspirant
Only about one percent of sweat is produced under the armpits. However, the feeling of wetness is felt here more strongly, since the sweat can not evaporate so easily - wet spots on the clothes and unpleasant odors are the result. To reduce the sweat production and / or the decomposition of the sweat and thus the smell, most people resort to a deodorant.
The products can be divided into two categories:
- deodorants contain antibacterial agents that inhibit the growth of sweat-degrading microorganisms. For this purpose substances are added that absorb odors and absorb moisture. Perfume oils spread a pleasant scent and cover up the smell of sweat, alcohol cools additionally. Some deodorants contain enzyme blockers (eg, triethyl citrate) which inhibit bacterial enzymes necessary for sweat decomposition.
- antiperspirants, which are falsely referred to as deodorants, however, limit the production of sweat. The active ingredients constrict the gland exits, thereby reducing the amount of sweat by up to 20-50 percent, thus depriving the bacteria of their "livelihood". Main ingredient is mostly aluminum chloride. In concentrated, pure form it occurs in the so-called Deokristall, a bred alum from an aluminum-salt mixture. The salt dissolves when moistened in water and is applied as a saturated solution on the skin.
Since the crystal does not contain irritant emulsifiers or alcohols, many dermatologists recommend it.
Ingredients in deodorant and antiperspirant
The following ingredients are used in deodorants and antiperspirants:
- Alcohol: dissolves ingredients, has a cooling effect, but can trigger unwanted skin reactions
- antioxidants: improve the shelf life of the ingredients
- farnesol: Substance that inhibits bacterial growth; Like other germ-inhibiting substances, it can disrupt the natural germ flora on the skin
- Glycerine and vegetable oils: soothe the skin and make it supple
- Silica: a natural mineral that absorbs greasy sweat residues
- Perfumes and fragrances: cover body odor and give a fresh feeling; however, they can cause allergies
- Herbal additives: Extracts of beard lichen, clove flowers or sage leaves relieve skin irritation, have an antibacterial and calming effect; Sage is also considered sweat-regulating.
Many remedies are a combination of deodorant and antiperspirant. But many people are sensitive to the additives they contain - their skin shows redness and itching, all the way to allergic reactions. Deodorants or antiperspirants from the pharmacy are suitable for particularly sensitive skin - with as few additives as possible.
Deosprays & Co.
Most commonly used are sprays or lotions (often in the form of deodorant skins). Sprays additionally have a cooling effect, lotions with fats. They adhere better to the skin than traditional deodorants do with alcohol, building up a depot that binds moisture for longer and gradually releases the sweat-regulating effect of aluminum chloride.
A rather unfashionable variant is body powder. It binds sweat and deprives the bacteria of the moisture they need to live. However, with appropriately sensitive people or poor personal hygiene, it clogs the pores, causing pimples to form easily.