Instead of simply pulling the plug out after a long bath and letting the sewage systems deal with the water, Sydney Sweeney is now selling the stuff.
The Euphoria star, 27, smelt a strong whiff of opportunity after previously starring in an advert for Dr Squatch's body wash, and is now flogging the liquid she herself has bathed in.
She appeared as a 'body wash genie' in the promotional clips which first went live last October, while one showed her sharing some suggestions for 'dirty little boys' while soaking in a bath of suds.
This flirty footage subsequently went viral, and the sales for the soap brand probably shot up by epic proportions.
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Dr Squatch and Sweeney are now hoping to capitalise on the success of this campaign once again, as the actress has joined forces with the firm to create a brand new product.
Fans of the Anyone but You alum can now get their hands on a bar of soap which is 'made with her actual bathwater', according to Sweeney - and they apparently come with a certificate verifying this statement.
It's described as 'the ultimate blend of outdoor serenity with refreshing notes of pine, douglas fir, earthy moss, and a touch of Sydney's Bathwater Bliss'.
The bar of soap 'channels two of the best places on Earth: the great outdoors and Sydney Sweeney’s bathtub,' a press release from the brand said.
There's only 5,000 of them too, so you've got to be quick if you want one when they go live on 6 June - and let's have it right, they are probably going to fly off the shelves.
Announcing the news in an Instagram post, Dr Squatch said: "You kept asking about my bathwater after the @drsquatch ad...so we kept it.
"Introducing Sydney’s Bathwater Bliss! A very real, very limited-edition soap made with my actual bathwater."
And if, like a lot of people, you were wondering why on Earth Sweeney has gone down this route, she's already explained herself - and acknowledged it is a bit 'weird'.
"When your fans start asking for your bathwater, you can either ignore it, or turn it into a bar of Dr Squatch soap," the Washington-born screen star said.
"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."
There's been a mixed reaction among social media users, with some hailing it as an 'amazing' idea, while others reckon it's downright 'creepy'.
But there's some simply taking the glass-half-full approach, like one person who pointed out: "Whatever makes men take showers."
Another commented: "I love you Sydney but what the f**k is this?"
A third said: "Thanks, I’ll take 100."
A fourth wrote: "Imagine being down bad enough to buy this."
While a fifth chimed in saying: "I will be buying!"
Topics: Sydney Sweeney, Celebrity, Weird, Shopping, Viral
Olivia Burke