Sydney Sweeney is defending her partnership with a soap company to sell products infused with her bathwater.

Yes, you read that correctly, she is selling products with her very own bathwater in them.

On the red carpet for her new film, “Echo Valley,” Sweeney told E! News, "I think that it's more fun to see everybody else talk about it."

When asked who came up with the idea, Sweeney said, “I pitched it.”

Sydney’s Bathwater Bliss was announced on May 29 in a joint post on Instagram with the actress and the soap company, Dr. Squatch.

“When your fans start asking for your bathwater, you can either ignore it or turn it into a bar of Dr. Squatch soap,” Sweeney said in a press release for the product.

She continued, “It’s weird in the best way, and I love that we created something that’s not just unforgettable, it actually smells incredible and delivers like every other Dr. Squatch product I love. Hopefully, this helps guys wake up to the realities of conventional personal care products and pushes them towards natural.”

The product has already sold out online. Yes, you read that correctly, too. People actually bought products containing used bathwater.

Speaking with People Magazine, Sweeney responded to the reporter telling her the internet was ‘either all for it with some saying 'whatever makes men take showers,'” saying, “I mean, honestly though.” We admit, we are also all for anyone who takes a shower.

Sweeney isn’t the only celebrity who’s cashed in on unique products for their brand.

Rock band KISS had plenty of products with their name on image on them, but none so strange as the KISS Kasket, introduced in 2001, with a $4,700 price tag and a promise that it was multifunctional and could work as a cooler on top of its more obvious purpose.

Lead singer Gene Simmons later admitted, “The idea was a little morbid” to MTV. “Obviously, caskets are all about death, and they’re not reusable. It’s a no-deposit, no-return policy. So I came up with the bright notion that if death was so awful, why not celebrate life? In other words, why not have a daily use for the caskets? Why not watch your favorite ball game on TV, invite your friends over, and open the Kasket to get a drink?”

We would have thought such an iconic brand would have made plenty of money, but if this gives them a couple of extra bucks, okay.

Gwyneth Paltrow’s luxury lifestyle brand Goop launched the risqué candle in 2020 for $75. Earlier this year, Paltrow explained, "That product is so fascinating because we were messing around with different scents one day. I smelled something and I was like, ‘Oh, that smells like — you know,” per Entertainment Weekly.

Paltrow still defends the product, even though she said, “It took us a long time to live that one down.” We’re not sure she has yet.

"I kept it on the site because there is an aspect to women’s sexuality that I think we’re socialized to feel a lot of shame," she explained. "I sort of loved this kind of punk rock idea. We are beautiful and awesome."

Before she launched her fashion line, Jessica Simpson had another business venture with her makeup and skincare line, Dessert Beauty.

The products, including things like whipped body creams and lip glosses, were all edible and scented like various sugary treats. After legal battles and flagging sales, the brand stopped production in 2006.

Post Malone is one of many celebrities with a load of endorsements tied to his name, and in 2020, he partnered with Crocs for the fifth time for a limited edition shoe, in black and pink, as well as a series of charms inspired by his tattoos.

The Hanson brothers, Zak, Taylor, and Isaac, burst onto the scene in the late 90s with their hit single, “MMMBop,” and have continued performing and making music together.

They also went in on nostalgia with their beer company, Hanson Brothers Beer, and its signature beverage, MMMHops, an IPA with “citrus and tropical fruit notes are balanced by a subtle bitterness that will have you saying 'MMMhops!’” according to their website.