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The cocaine inside of the dollar bill.

She wanted to powder her nose — but not with this!

A Manhattan makeup artist found some alarming extras — what appeared to be cocaine and a straw to snort it — when she unpacked a box of beauty supplies from Sephora, The Post has learned.

Christina Milano, who works at an Upper East Side makeup store, said Thursday that she ordered $252 worth of products from the famed French retailer that arrived at her Hoboken home earlier this month.

In addition to a foundation stick, false eyelashes and other items, the UPS shipment from Baltimore contained a Sephora-branded retractable reel attached to a pair of plastic badge sleeves, one of which held a female employee’s company ID, she said.

When Milano checked out the second sleeve, which held a forklift operator’s card and a photo of a young girl, hidden inside was “a dollar bill folded up very nicely.”

“And then when I opened that, there was a good amount” of what appeared to be cocaine inside, Milano said. It’s not clear what the powder actually was.

Also tucked into the sleeve was a short piece of a plastic drinking straw with one end cut at 45 degrees, she added.

Milano, 30, said she thought it was cocaine because “I’ve seen it and I’ve been offered it in the past” and was freaked out because “I could have gotten in trouble for this.”

“What if there was a random check at the post office?” she said.

Milano contacted Sephora and sent the company photos of everything she discovered, including a shot showing the powdery white substance inside a folded $1 bill.

In response, a customer service representative sent her a message assuring her that the company “will take the next appropriate steps, after our investigation.”

A follow-up message instructed her, “There is no need to send back the foreign items found in your box, I ask that you dispose of them.”

“Additionally to apologize for your experience, I have added $100 in online credit to your Beauty Insider account,” it added.

Milano said the company’s response left her “a little bit angry.”

“It was kind of like, here’s $100, like, you know, don’t talk about it,” she said.

The Sephora worker appears to be a Maryland woman whose Facebook page includes a photo of her posing with several other people, all wearing bright red T-shirts, underneath a lighted “SEPHORA” sign, and multiple selfies showing her and the girl whose picture was sent to Milano.

Records show her most recent address is a house that’s a short drive from the Sephora distribution center in Aberdeen, Maryland.

When a Post reporter visited the house on Thursday, a girl there phoned her grandmother, who said the woman was her sister but no longer lived there.

“She’s on the grid, off the grid. She’s always changing her phone number,” the sister said.

“She lived here that one time, but I haven’t spoken to her in a month. And even then it was only for 15 minutes.”

The sister also said the woman had a history of drug abuse, but wouldn’t elaborate.

In a prepared statement, Sephora said it has a “zero-tolerance policy around illegal substances in the workplace.”

“We have investigated the matter and taken appropriate actions,” the company added.

Additional reporting by Reuven Fenton in Maryland and Bruce Golding in New York