3D-printed “living tattoo” turns bacteria into sensors and computers you can wear

Handy!

A woman’s reaction to a 15-year-old tattoo nearly fooled doctors it was cancer

The story brings into discussion the often overlooked issue of tattoo ink safety.

Why getting a tattoo hurts — the science behind inking

Humans have tattooed themselves since times immemorial to celebrate gods, show social standing, for medicinal purposes or just to look good. And since the dawn of this controversial form of art, people have endured excruciating pain to adorn their body with ink; but why does tattooing hurt so much?

Tattoos can cause severe adverse reactions in the skin 1 out of 10 times

One in four people in the US has a tattoo, and if you’re part of this statistic you know how painful getting one can be. The problem is that, like the tattoo itself, that pain lasts and in some cases the adverse reactions caused by the foreign body, i.e. the dye, can endure for months and months at a time. This isn’t something new per se, but what’s surprising is how frequent this happens. Researchers at New York University asked 300 or so people in Central Park if they had a tattoo and whether they experienced anything out of the ordinary following the procedure, like redness and scarring. Almost 10% confirmed they had developed abnormal reactions. Of these 6% had itching, scaly skin and swelling , and 4% claimed they went through pain, itching and infection and these didn’t stop for at least four months.

Tattoo removal could be as easy and painless as putting on a cream

Alec Falkenham, a 27-year-old PhD student at Dalhousie University in Halifax, has invented a special cream that will wipe out tattoos for good, without the pain and scaring expected today following laser surgery. Time to erase your ex-lover’s name off that shoulder… or keep it! Good or bad memories are what make you the person you are today, you shouldn’t be ashamed of that. Either way, soon enough you might have the means to make your own choice – one that doesn’t involve burning you skin.

Woman tattoos facebook friends on her arm

How do you feel about your facebook friends ? I like them; some are my good friends in real life, some are just people I know, and I have only a vague idea who some of my facebook friends are. But this woman loves them all; she loves them so much that she permanently inked them onto her arm. But