SHE NEVER believed that "hair training" would work.
But one woman who's on day 20 of not washing her locks has been left stunned by just how soft her hair is.
to share a video extolling the virtues of the process, as she said: "This is day 20 of me not washing my hair.
"My hair has never felt softer," she gushed.
"I thought it was going to get greasier and greasier but I feel like I’ve hit a point of like…it feels actually soft.
"It actually, legitimately feels so soft. I can’t get over it.
"I obviously need to brush it but this training hair situation, it actually does work."
Imogen insisted she's "not just saying this", and had struggled in the past to get through six days without washing it, before she started getting too itchy.
"But once I get past seven days, I’m good to go huns," she smiled.
"SORRY BUT I AM BLOWN AWAY!" Imogen added in the caption.
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However, people in the comments section insisted their hair wouldn't look as good as Imogen's if they left it without washing it.
"My hair would look like I’d dunked it in a pan of oil at this point," one wrote.
"My hair's never been the same after having my little boy."
"I don’t understand! Mine would look like a seal licked it," another added.
While a third wrote: "When I was ill I didn’t wash my hair for 2 weeks and by the end of the 7-8 days it’s started to ungrease and be so much softer too!
"So strange isn’t it ah."
"I really recommend doing this, I did it and my hair hardly gets greasy anymore," someone else commented.
But another warned: "You can start to develop a scalp infection by the way, as yeast will start to overgrow on the scalp.
"2 weeks is fine as a curly girl but be careful."