A TikToker who claimed to serve time behind bars is now serving up “jail hacks” that can be used in the outside world.

Tina Tsakonas is a recovering drug addict who was in and out of jail for many years, she said.

She’s now seven years sober and working as a bartender and content creator, amassing 1.3 million TikTok followers.

But as she revealed in her latest viral video, Tsakonas still swears by four “jail hacks” that she still uses.

She starts the 13-second clip by eating a yellow mustard packet, claiming it helps heartburn.

Then Tsakonas rubs hair conditioner on her skin and shirt in place of perfume.

“Deodorant for razor burn,” Tsakonas suggests next, pointing to her bikini line.

And, finally, Tsakonas suggests using toothpaste — and a toothbrush — to clean your shoes.

The Post has contacted Tsakonas for comment.

Some of Tsakonas’ previous videos showed how she made her own mascara and laundry detergent, as well as how she “decorated” her jail cell.

Tsakonas’ recent jail hacks video amassed more than 4.1 million views, as well as nearly 1,000 comments from people stunned by her advice — specifically about the mustard shocker.

“Not my preggo self literally climbing out of bed at 11 pm to try the mustard hack,” one woman wrote.

“The mustard one WORKS. I’ve lived by this,” someone else backed Tsakonas up.

Another claimed: “Hahaha my friend in prison told me about the mustard! i didnt believe him lol.”

“Bro mustard is the last thing I would have thought for heart burn,” a third commented.

Meanwhile, another declared: “DEODORANT FOR RAZOR BURN HAS BEEN MY BEST KEPT SECRET OF MY ENTIRE LIFE

“I’ve been doing that deodorant trick for forever! also helps with chaffing,” another advised.

Others were wowed by the toothpaste hack.

“We use toothpaste on my daughter’s cheer shoes for competition day so they are white and shiny!!” offered one fan.

One more user even recommended another use for it.

“I still clean my shoes with toothpaste and use toothpaste to get rid of my pimples,” they wrote. “I learned it when I was in a long term youth development center.”