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Show captionThe microneedle tattoos are pressed on painlessly. Photograph:
Georgia Institute of Technology
Tattoos


MICRONEEDLE TATTOO TECHNIQUE COULD MAKE TATTOOING PAINLESS AND FAST

Scientists at Georgia Tech say press-on innovation opens opportunities for
medical and cosmetic use

Hannah Devlin Science correspondent
@hannahdev
Wed 14 Sep 2022 13.11 EDT
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1 year old

Painless, bloodless tattoos have been created by scientists, who say the
technique could have medical and cosmetic applications.

The technique, which can be self-administered, uses microneedles to imprint a
design into the skin without causing pain or bleeding. Initial applications are
likely to be medical – but the team behind the innovation hope that it could
also be used in tattoo parlours to provide a more comfortable option.

“This could be a way not only to make medical tattoos more accessible, but also
to create new opportunities for cosmetic tattoos because of the ease of
administration,” said Prof Mark Prausnitz, who led the work at Georgia Institute
of Technology. “While some people are willing to accept the pain and time
required for a tattoo, we thought others might prefer a tattoo that is simply
pressed on to the skin and does not hurt.”

Mark Prausnitz at Georgia Tech displays a microneedle patch. Photograph: Georgia
Institute of Technology

Prausnitz’s lab has been researching the use of microneedles for administering
vaccines and realised the work could be applied to tattoos.

Tattoos typically use large needles to puncture the skin between 50 and 3,000
times a minute to deposit ink below the surface, a time-consuming and painful
process. The Georgia Tech team has developed microneedles made of tattoo ink
encased in a dissolvable matrix. By arranging the microneedles in a specific
pattern, each one acts like a pixel to create a tattoo image in any shape or
pattern, and a variety of colours can be used.

Microneedle tattoo designs of a medical alert (top left) and a heart (top
right), with their imprints (below). Photograph: Song Li, Georgia Institute of
Technology

In a medical setting, tattoos are sometimes used to cover up scars, guide
repeated cancer radiation treatments or restore nipples after breast surgery.
Tattoos also can be used instead of bracelets to communicate serious medical
conditions such as diabetes, epilepsy or allergies.



The study showed the tattoos could last for at least a year and were likely to
be permanent, which also made them a viable cosmetic option. Microneedles could
alternatively be loaded with temporary tattoo ink.

“The goal isn’t to replace all tattoos, which are often works of beauty created
by tattoo artists,” Prausnitz said. “Our goal is to create new opportunities for
patients, pets, and people who want a painless tattoo that can be easily
administered.”


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LESS THAN SIX HOURS’ SLEEP CUTS IMMUNE RESPONSE TO VACCINES, DATA SHOWS

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THE 2024 OSCARS FASHION TRENDS DESIGNED TO SET SOCIAL MEDIA ALIGHT


The 2024 Oscars fashion trends designed to set social media alight


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