A $30 curling iron is the secret to Kim K. and Sofia Richie's mermaid hair

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If you follow a certain set of women on Instagram — like Kim Kardashian, Sofia Richie and Madi Edwards — you've probably already noticed that 'mermaid hair' is trending. That is, long, cascading locks that are crimped from the root, resulting in a dreamy, ethereal look.

In fact, there's over 2.5 million images already tagged with the phrase "mermaid hair" on Instagram, if you ever doubted the popularity of this style.

Maybe she's born with it, but it's more likely due to a new rise in curling irons with three barrels instead of just one. These distinctive pink-hued hair wavers are popping up everywhere on beauty forums and websites.

The reigning brand on social media seems to be Mermade Hair — Richie's tool of choice — but there's noticeably been an influx of other versions on Amazon too.

Take for example, the customer favorite ceramic tool by Alule, which has three one-inch barrels allowing you to achieve fairytale waves in minutes.

Shop: Alure Three Barrel Curling Iron Wand, $31.99

The lightweight waver heats up in just 60 seconds and has a 360 degree swivel cord to make things easier (also meaning that curling your hair is less of a taxing arm workout than you're used to!) It also boasts a dual voltage, so it's great for international travel.

The convenient hair tool has already racked up over 800 resoundingly positive reviews.

One reviewer wrote, "Perfect size. Easy to handle. Works on my mom's fine hair or my daughters full head of hair. Nice waves that stay throughout the day. Heats up super quick. I got lots of compliments when I wore my hair in this style with "beach" waves. I had a small difficulty getting it to stand on the holder but that doesn't affect the performance of the curling wand. will [definitely] use again."

Another person — a busy mom — said the curler is the quick and easy secret to achieving celebrity-worthy hair at home in minutes.

She said, "I absolutely love this curling wand. I bought this wand with the hopes that it would be quicker and easier to style my hair and that the curls would stay. I have to say that this wand met all of my expectations! It’s so easy to use and my hair turns out beautiful each and every time. I have young children and [it's] hard-finding time to do my hair or spend time on my appearance. This curling wand has cut the time to style my hair in half and makes it much easier for me to feel confident in my appearance. If you are looking for an easy to use styling tool that gets the job done this curling wand is for you!"

Ready to bring beachy vibes to your everyday life? Shop yours on Amazon now.