Background The skin of jellyfish contains so-called cnidocytes, which are used against prey and enemies when they come into contact with the skin. When appropriately irritated, a cnidocyst is ejected at high speed like a kind of harpoon, injecting a venom deep into the victim’s skin. This venom causes mild to fatal toxic and allergic … Jellyfish Repellent
Shisha smoking Shisha smoking involves heating tobacco with charcoal. It is referred to as smoldering. The smoke is passed through water and travels through a hose to the mouthpiece, which is used to inhale it. It is mostly smoked in shisha bars or cafes in a social setting. Many varieties exist and electric hookahs are … Shisha
Definition Aldehydes are organic compounds with the general structure R-CHO, where R can be aliphatic and aromatic. The functional group consists of a carbonyl group (C=O) with a hydrogen atom attached to its carbon atom. In formaldehyde, R is a hydrogen atom (HCHO). Aldehydes can be obtained, for example, by oxidation of alcohols or by … Aldehydes
Products Methanol is available as a chemical in stores and, for example, in pharmacies and drugstores. Structure and properties Methanol (CH3OH, Mr = 32.0 g/mol) exists as a colorless liquid with an alcohol-like odor that is miscible with water. It is harmful to health and highly flammable. Methanol vapors can form an explosive mixture with … Methanol
Products Specialty retailers can order formaldehyde solutions from specialized suppliers. Structure and properties Formaldehyde (CH2O, Mr = 30.03 g/mol) is the simplest representative from the substance group of aldehydes, which exists as a gas. The boiling point is -19 °C. Formaldehyde oxidizes easily to formic acid. It can be obtained by the oxidation of methanol. … Formaldehyde
Products Colistimethate is commercially available as a powder for the preparation of a solution for a nebulizer and as a powder for the preparation of an infusion solution for a nebulizer. It has been approved in many countries since 2000. Structure and properties Colistimethate sodium is prepared from colistin by reaction with formaldehyde and sodium … Colistimethate
Products Methenamine is commercially available as an ointment (Antihydral). It has been approved in many countries since 1968. Structure and properties Methenamine or hexamine (C6H12N4, Mr = 140.2 g/mol) exists as a white crystalline powder or as colorless crystals and is readily soluble in water. Effects Methenamine (ATC D11AA03) has antiperspirant and antimicrobial properties. The … Methenamine
Products Hepatitis A vaccine is commercially available as an injection suspension (Havrix). It has been licensed in many countries since 1993. A fixed combination with hepatitis B vaccine is also available (Twinrix). Structure and properties Hepatitis A vaccine is either hepatitis A virus inactivated with formaldehyde or a liposomal preparation of hepatitis A virus antigen. … Hepatitis A Vaccine
Definition The self-tanner is a cosmetic product that leads to a darker skin color through repeated application. Self-tanning has the advantage over conventional sunbathing or a visit to a solarium that you do not have to expose yourself to harmful UV rays. Effect of the self-tanning lotion Self-tanners color the horny layer (stratum corneum) of … Self tanner
Can self-tanning products also be harmful? The use of self-tanning products generally involves few risks. Its use is usually harmless, as only the outermost layer of skin is stained and the product cannot enter the body’s circulation. Self-tanning lotion is absolutely unsuitable for children, as children’s skin behaves differently than adults’ skin. People with skin … Can self-tanning products also be harmful? | Self tanner
Can I use self-tanning products during pregnancy? Self-tanners are considered safe for the foetus, but experts still advise against using tanning creams in the critical first three months. The skin of pregnant women changes due to the increase in hormones, the nipples become darker and pigmentation spots can develop. This can be further intensified by … Can I use self-tanning products during pregnancy? | Self tanner
Physiological background Sweat is produced by millions of eccrine sweat glands that are distributed throughout the body and are particularly numerous on the palms and soles of the hands, face, and armpits. The eccrine sweat glands are spiral and clustered glands that open directly onto the skin surface. They are innervated by cholinergic nerve fibers … Heavy Sweating
