Beauty trends gone viral! This week, POM POMS are replacing eyeshadow, confetti hair is bringing the party to the salon, and contouring gets colorful

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Before social media, it used to be that trends had a seasonal, or at least monthly, shelf-life.

The advent of Instagram, Snapchat and YouTube, however, has made flash-in-the-pan viral sensations a daily occurrence - especially in the beauty space.

Here, we chart the latest hair and make-up fads (as in the ones we've seen in the past few weeks alone), so you'll know which ones are in and which ones are out - at least for now.

IN: CONFETTI HAIR

Party time! Confetti has inspired the latest Instagram-worthy rainbow hair trend

Rainbow hair is still having a major moment thanks to creative colorists who keep dreaming up new ways to play with unconventional-hued dyes. The latest Instagram-worthy iteration to know is confetti hair.

The fun look, which is created by alternating dabs of pastel hues, was coined by Australia salon Blondies of Melbourne.

Salon owner Karen Lewis told cosmopolitan.com of the look, 'it's soft, pretty, happy, and it imparts little spots of pure joy on the hair like confetti!'

OUT: PIZZA HAIR

A tasty surprise: A colorist from Canada racked up the likes on Instagram after she created a pizza-shaped undercut for a client

You might love pizza, but probably not as much as a recent client of Canada-based colorist Kelly Woodford who got part of her hair shaved in the shape of a pizza slice.

After creating the triangular undercut, Kelly used hair dye to illustrate crust, pepperoni and peppers. 'Be inspired by what you eat,'  the pro captioned a post of the finished look on Instagram. 

While it's just now getting attention, the look was originally created in January and so far we haven't spotted any copycat styles. 

IN: POM POM MAKE-UP

Arts and crafts: Make-up artists are looking to the art supply aisle for creative ways to up their beauty game

Furry is the new matte? One beauty lover adhered colorful pom poms around her lips instead of wearing lipstick

Instagram make-up artists are getting crafty - specifically with colorful pom poms - in order to churn out fresh content for their growing number of followers.

They've adhered the art supply to their eyebrows, around their eyes and around their lips, sometimes in addition to make-up and other times in lieu of.

'I saw these tiny pom-poms in Clarke's (tip top craft shop in Brighton) and just knew they had to be on my face. My eyes have never felt so cozy,' wrote beauty lover Heather Moorhouse on the photo sharing app. 

OUT: STICKER HAIR

Not just for kids: A hairstylist at New York City's Bumble and Bumble salon used tiny stickers to create a fun and totally unique look 

New York City-based hairstylist Allen Thomas Wood has also been mining craft stores for beauty accessories. 

Last week, a style he created using colorful animal and food-themed stickers quickly racked up 1,000 more likes than his photos typically get on Instagram.

While the inner kid in us loves the playful look, it's not something Allen recommends wearing in real life. He told Femail that the stickers flaked off easily and that he had to press them onto the hair with a tail of a comb to get them to adhere for the picture. 

IN: EYEBROW WIGS

The full picture: Eyebrow wigs are a known solution for those who suffer from hair loss, but now those with over-plucked brows are interested in using them for a fuller look

Celebrity make-up artist Hung Vanngo piqued the curiosity of his half million followers on Instagram yesterday when he posted a video of a woman getting fitted for a brow wig.

While stick-on brows are making headlines this week thanks to the post, the product has long been used by those with cancer and alopecia, or those who have experienced hair loss.

A number of YouTube vloggers hoping to beef up their brows have reviewed the arched wigs, and we expect to see more giving the product a try in the coming weeks. 

OUT: BROW CARVING

Looking sharp: Make-up artists are showcasing their statement brows by tracing them with eyeshadow

After having exhausted all the ways to manipulate brow hairs in the various shapes (dragon brows, feather brows and barbed wire brows have all been a thing), beauty lovers have begun drawing sharp lines around their brows with make-up. 

The trend, dubbed brow carving, was started by Austin, Texas-based make-up artist Alexa Link as part of a #1000daysofmakeup challenge on Instagram. 

While Alexa's viral brow carving look received over 10,000 likes on the app, not everyone is feeling it. 'I think she forgot how eyeshadow works,' wrote one commenter, while another likened the look to a burn mark from a curling iron. 

IN: COLORED CONTOURING

No blending required: Inspired by Kabuki, legendary make-up artist Pat McGrath painted the hollows of models cheeks at the Louis Vuitton resort show last week with colorful pigments

As if exaggerated brows and winged eyeliner weren't enough, make-up artist Pat McGrath contoured some of the models' cheeks with bright pigments at the most recent Louis Vuitton 2018 resort show.

According to vogue.com, Kabuki make-up and the 1970s Japanese film series Stray Cat Rock inspired the vibrant look, which was fitting considering the show was held outside of Kyoto, Japan. 

Though the make-up might not be suited for everyday wear, we can totally see someone like Rihanna rocking the look at a red carpet event. 

OUT: YELLOW BLUSH 

Keep it classic: Though yellow blush had a moment on social media recently, the unconventional look has yet to take off in real life

The non-traditional make-up hue made our 'In' list less than two weeks ago after the trend initially took off on Instagram. 

However, since then the buzz has faded and we've yet to see anyone walking down the street wearing yellow blush. 

The only golden tone we'll be wearing on our faces this summer is bronzer.  

IN: SKIN GRITTING

Yuck! Members of the Reddit community SkincareAddiction are sharing the results of a three-step process called skin gritting that removes blackheads

Removing blackheads is one of the most satisfying beauty treatments there is, so it's no wonder that skincare junkies on Reddit are going crazy over a fresh way to extract the gunk called skin gritting. 

The process consists of three steps: Cleansing with an oil cleanser, applying a clay mask and washing it off and then cleansing again, this time vigorously.

Redditers have been sharing the impressive results on the site, though dermatologists warn that the method is not for those with sensitive skin. 

OUT: PAINFUL PEEL-OFF MASKS 

Surpise, surprise: The painful peel off masks taking YouTube by storm are not kind to your skin, according to experts

Watching beauty vloggers and Instagram stars tear purifying peel off masks from their noses, T-zones and, in some cases, their entire bodies, may be entertaining in a sadistic kind of way, but you'll want to think twice before trying one of the products at home.

Experts have warned that while the masks remove blackheads and debris from pores, they also rip off the surface layer of skin cells and strip it of natural, essential oils, both of which keep the complexion balanced and healthy.