How does 48-hour deodorant work?

Thursday 26th August 2010
Submitted by cpearce1
HENRY LAMBOURNE

The bacteria that feed on your sweat and cause the odour are killed using alcohol and their recolonisation is inhibited using acidic or salty compounds. At the same time, aluminium salts cause your sweat glands to absorb water and swell shut, preventing further sweating. The 48-hour formulations are mainly different in the way they use various gums and waxes to resist being rubbed or washed off your skin.

GOT A QUESTION?

Scratching your head over a burning scientific conundrum? submit your question and we'll get our esteemed panel of experts to answer it for you.

 

What is the largest animal ever eaten by a Venus flytrap?
previous qanda Article
How does the power output of a traditional windmill compare to a modern wind turbine?
next qanda Article
Q&A Tabs

It’s not just humans that enjoy a smooch; lots of animals have courtship behaviours involving the mouth. Pigeons touch beaks, cats and dogs nuzzle each other, male fruit flies lick the...

Viagra is the brand name for sildenafil citrate, a drug that was originally studied for use in patients with high blood pressure or heart disease. It works by blocking the action of an enzyme...

Yes. Stroking is the equivalent of grooming and grooming is the way that cats, dogs, monkeys, and many other animals maintain their relationships and care for each other. They enjoy it, as well as...

Phlegm is the mucous secretion of the respiratory passages. The cilia cells that line these passages are continually driving the phlegm upward to the throat, where it triggers the swallow reflex...

With its sugar, carbonic and phosphoric acids, cola would seem well able to dissolve teeth. But so can many acidic drinks, including orange juice: there's nothing especially nasty about cola. The...

All female mammals have a clitoris, the sole purpose of which is to react to sexual stimulation, and presumably this stimulation has evolved to be pleasurable for most species. But establishing...

To create a sound, we have to set matter - whether it's a gas like air, a liquid or even a solid material - in regular motion, creating a wave of specific frequencies, which we hear as a sound of...

Mirrors don’t reverse left and right either – that’s just our interpretation of what happens. Your reflection in the mirror is actually reversed front to back – if you have...

Discovered by an American student named Gary Flandro in the mid-1960s, the slingshot manoeuvre usually involves spacecraft briefly 'coat-tailing' a planet orbiting the Sun, extracting some of the...

The ice disappears because the wind blows away water molecules that have evaporated or 'sublimed' from the ice, so the ice slowly shrinks in size. The molecules that escape are those with the...