A TATTOO fan showed off the latest design she got on her arm - complete with a massive 'ink bubble'.
The woman, who calls herself Jade, revealed the giant black ‘ink sac’ which formed above an indelible picture of a skull.
In the clip, which amassed 22 million views, Jade can be seen pushing the liquid around and shaking it, revealing the green pattern beneath.
The 19-year-old revealed she does her own tattoos, and previously shared clips of the 'sacs' across her body, including on her legs.
After getting her latest design, she said on TikTok: “lmao another ink sack?!? I did these tattoos on myself!!
“Also, this is completely normal it’s all plasma! you keep it wet for the healing process.”
Despite people being confused by its appearance, she later shared snaps of her designs fully healed, saying: “My tattoo looks amazing.”
'Ink sacs' are a normal part of the healing process, and occur when specialist plastic is covering the tattoo, called Saniderm.
This is done to prevent the tattoo from scabbing, and "seals in the plasma and keeps it in its liquid form", while still letting the tattoo breathe.
Tattoo brand Bobbi Stark explained: "Its normal for your Saniderm to fill with plasma, ink and blood.
"It typically creates a dark brown liquid that sits on your tattoo under the plastic."
Despite being a common tool in tattoos, many people claimed they’d never seen one before.
Commenting on Jade’s video, one person said: “I have a lot of tattoos but never in my life did I have a freaking ink sack. It doesn't look safe, I know they white ink at the end but this?"
Another wrote: “Okey okey I'm getting my sleeves done in like a week from now, what is that?1 What am I missed and why did no one tell me about this?"
A third asked: “Are ink sacks bad?"
This stunned person said: “I have just one question I just wanna know what is an ink sac and how does it happen?"
While this ink fan added: “Nice! Although the ink sack alone was kinda cool."
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