The most expensive celebrity beauty treatments ever

Treatment: Humidifier

Cost: Approx. $2.5 million

The Canadian singer requested a $2 million humidifier in her Las Vegas hotel room to keep her vocal chords warm and prevent the climate from drying out her skin—because, why not?

Treatment: Anti-cellulite device

Cost: Approx. $99,000

Ever wondered how Madonna makes 59 look so good? The singer reportedly purchased an at-home anti-cellulite machine for about $99,000. The device uses acoustic wave therapy that assists to eliminate skin dimples.

Treatment: Hair

Cost: Approx. $25,000 per week

From long luscious locks to shoulder-grazing lobs, Rihanna rarely steps out with the same hairstyle twice. In fact, the singer-turned-beauty-entrepreneur spends $25,000 a week on a personal hair stylist—that's over one million dollars per year.

Treatment: Evian bath

Cost: Approx. $6,300

Serena Williams was the first person to experience the world's most expensive bath at the Hotel Victor in Miami Beach. The 'Evian Experience' comes equipped with spa treatments and 1,000 litres of natural Evian spring water—talk about bathing in style…

Treatment: Manicure

Cost: Approx. $2,500

Gigi Hadid's manicure for the 2016 Met Gala cost nearly $2,500. The silver-chrome nails were apparently "hidden with crystals." Mary Soul, her nail artist, said that she added three crystals underneath each nail for "an element of surprise."

Treatment: Sheep placenta facial

Cost: Approx. $635 per treatment

Although it was discovered that Victoria Beckham puts bird droppings on her face for skin benefits, she also loves to have sheep placenta facials. The ingredient, which is flown from New Zealand, helps the prevention of radical damage to the skin—and by the looks of things, it seems to work pretty well.

Treatment: Bee venom facial

Cost: Approx. $325 per treatment

Kate Middleton indulges in bee venom facials to keep her skin looking youthful. Although this treatment only costs $325 per session, one ounce of venom costs approximately $70,000 to extract. Victoria Beckham and Gywenth Paltrow also swear by it.

Treatment: Ruby facial

Cost: Approx. $8,900

In Hollywood, several A-listers love to indulge—especially Mila Kunis. The actress likes to keep her skin looking rejuvenated and fresh with a HD Diamond and Ruby Peel. The facial uses the stones to buff away skin impurities. You can try it out for a cool $8,900.

Treatment: Vampire facial

Cost: Approx. $1,900

A couple of years ago, we witnessed Kim Kardashian get a vampire facial on our television screens, and it didn't look remotely enjoyable. The treatment, which injects your face with your own blood, can cost around $1,900.