Bizarre hair curling hack style mavens can’t stop raving about involves putting your panties on your head

Talk about a cheeky beauty tip.

TikTok offers a plethora of nifty ways to skip a sizzling iron on your tresses — from braids and rollers to socks and robe belts — all in the name of effortless, overnight and heat-free curls.

But this spring, TikTok beauty enthusiasts are raising eyebrows by swapping damaging hair tools — for underwear?

Creator @zoreandtomek recently left style mavens on the popular social platform in a tizz — after she filmed herself wrapping her pin-straight hair around a thong like a headband, tucking the ends under to form a faux bob, then sleeping in the style.

By morning, the BeautyTokker removed the seamless thong from her mane and revealed loose, bouncy curls with a mermaid-like finish — to the surprise of viewers, who are now jumping on the trend.

User @jazrabarnes took to the app last month to give the thong trick a go as well, writing, “when the internet says put underwear on your head to curl your hair overnight you listen.”

In her clip, the beauty vlogger showed viewers how to secure the thong on one’s head with a scrunchie in the back — then cleverly slipped on a silk bonnet to lock the look in overnight.

In a follow-up video, she confirmed the hack did indeed work, calling it a “really good solution” for curling your hair when “traveling or something” — especially if you’ve got extra clean underwear in your suitcase.

She also recommended “misting” each strand of hair with water before twisting it (not too tightly) around the thong, and clipping any loose pieces into place with barrettes.

Creator @abbyylouuuu also recounted a similar success story, captioning a recent video of herself trying out the thong curls method, “consider this your reminder to put your underwear on your head and wake up with perfect curls!!”

If you prefer bikinis to thongs, @zoreandtomek also showed off the hack on Instagram using swim bottoms, wrapping her slicked-back ponytail around a clipped-in pair while sunbathing — and unveiling soft, siren-like waves.

The trend follows Pamela Anderson’s viral February 2023 moment, when she revealed to British Vogue how she always keeps a G-string in her Stella McCartney bag — and uses it to tie up her iconic ’90s bun.

Whether you’re twirling a thong into curls or using one to fasten an updo, ditching hot tools is a major win for your strands, as NYC stylist Brandi Voorhees told Shape.

“The main benefit to heatless curls is the overall health of your hair. Over time, hot tools can cause breakage, dryness, and damage,” she told the outlet.

The hair aficionado also noted that heatless curls (whether created with a thong or another item in your closet) are “definitely the stronger option when it comes to the health of your hair,” as opposed to a curling iron.

“Although heat styling can be a quicker, more effective method, with continued use, it can damage the cuticle,” she warned.

For optimal results, thong curls work best on damp hair left in for “3 to 7 hours.”

Just make sure everything is bone dry before removing the undies — or any no-heat tool — if you want those waves to last, Voorhees advised.