▲Flaccid skin? Why not try a sheep placenta facial? Well, not quite. In fact, it's the stem cells that are harvested and mixed into a serum.

▲The serum contains amino acids and peptides that help regenerate and vitalize the skin. It's a treatment Victoria Beckham and Kim Kardashian swear by.

▲The secretion of live snails contains biological properties that supposedly reduces acne and wrinkles, relieves skin conditions, and improves dull complexions.

▲Known as the nightingale facial, this treatment originated in Japan and involves pasting a mix of bird droppings, rice bran, and water over the face. The spa-goer then lies under a UV light until it dries.

▲Certain bird droppings are thought to contain enzymes that break down dead and damaged skin and restore your natural complexion.

▲Beer spas are taking the Czech Republic city of Prague by storm. The unique concept originates from a medical procedure dating back to the Middle Ages.

▲Caviar is also said to slow down the skin's aging process, while improving collagen levels in the face.

▲This one doesn't sound bad at all—and it's no surprise that it originates in one of the world's largest consumers of chocolate: Switzerland.

▲In Geneva there are several chocolate-related treatments on offer at various spas, including cocoa body scrubs, and chocolate and whipped-cream baths.

▲Cryotherapy is a wellness trend wherein a person steps into a giant fridge for up to three minutes, in temperatures of -230ºF (-145°C).

▲The gold body ceremony includes a hammam cleansing ritual, black soap body scrub, and a full body massage, before topping it all off with a 55-minute 23-carat gold facial.

▲Gold is believed to contain antioxidants said to alleviate sun damage and rid the body of toxins.

▲Laughter Yoga Wellness London & UK is a London-based provider of laughter yoga and holistic well-being workshops.

▲According to Laughter Yoga, the practice was developed in India by Dr. Madan Kataria, and has since been introduced in over 100 countries and territories.

▲Flotation therapy is when a person is encased in a large salt water pod designed to minimize sensory input. It's pitch black and completely silent. Some have even described being able to hear their eyelids open and close.

▲According to Floatworks, research has indicated that flotation therapy has the ability to elevate levels of dopamine and endorphins while "turning down" anxiety in the brain.

▲Snakey Sue, a snake dancer from Essex in the UK, runs a sanctuary where she offers live snake massage as a way to relieve tension and pressure in the body.

▲Caviar facials are not new, but not everyone has heard of them. Caviar contains fatty acids and vitamins that restore skin elasticity and locks in moisture.

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According to her website, snake massage is currently only available in Israel, Russia, Philippines, and the US.

See more: Self-massage tips to ease aches and pains

▲Many athletes swear by the treatment, claiming it promotes self-healing, releases endorphins, and boosts hormones. The treatment is popular in Nordic and eastern European countries.

▲Some spas offer a treatment where live snails excrete mucus directly over the skin. The more squeamish can opt for snail serum instead.

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Snake massage, sheep placenta masks, bird poo facials... there are some truly bizarre beauty treatments out there.

Click through the gallery and discover some of the world's weirdest wellness rituals.

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Beer's natural ingredients, namely hops and yeast, are believed to beneficial in cleansing pores and rejuvenating the skin.

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What started out as a retreat for over-worked executives has turned into a way of life. The growing trend, which originated in Italy, has crossed over to other countries, including the UK.

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The therapies offered promise to teach people how to "let go of things that upset them" and dispel worry, stress, and anxiety.