Here’s Why Everyone on TikTok is Applying Hyaluronic Acid to Their Hair


When it comes to discovering new hair tips and tricks, TikTok is a goldmine. The TikTok hair community is always clueing us in on the most genius hacks. While some of them have been pretty questionable — like using perfume as hair dye —  other hacks like the “bathrobe curls” trick and using rice water as a hair rinse have completely transformed the way consumers style and care for their hair. 

At the moment, the latest hack to dominate “HairTok” involves adding one of skincare’s buzziest ingredients, hyaluronic acid, to your hair routine. Often hailed as a skincare hero for its moisturizing benefits, the miracle ingredient is being praised for its ability to hydrate and soften hair. In fact, hyaluronic acid has become so popular on the app that the hashtag #hylauronicacid has already garnered over 109.8 million views.


Saw a TikTok that said hair oil doesn’t moisturize your hair, only water can. So I tried Hyaluronic Acid! 🤯 #hyaluronicacid #hair #hairhack #dryhair

♬ Good as Hell – Lizzo

In a recent viral video titled, “I tried hyaluronic acid in my hair for two weeks and this is what happened,”  TikToker Kaitlyn Boyer (@kaitlynroundtree) applies The Ordinary’s Hyaluronic Acid 2% Serum to her strands for two weeks, documenting the progress. After applying the serum to her strands every night, her once dry and brittle hair looks noticeably silkier, smoother, and more hydrated. By the end of the two weeks, viewers are able to see that Boyer’s locks are in a much healthier state and she even shares in the video that her hair is “so soft and way more manageable — even my hair stylist asked me what I’d been doing.”

While Boyer’s video certainly makes the case for adding hyaluronic acid to our hair routine, you might be wondering if it can really moisturize your strands. Dean Mraz Robinson, a Connecticut-based board certified dermatologist, told Allure, “Hyaluronic acid is a humectant, and rather than moisturizing hair, it works by drawing moisture in from the environment. When applied to damp hair, HA can hold approximately 1,000 times its weight in water.” It’s this moisture-binding element of hyaluronic acid that makes it so beneficial for most hair types as it not only soaks up moisture but retains it, keeping hair hydrated. 

With the temperatures continuing to drop, now is a great time to consider adding hyaluronic acid to your hair routine, especially as your strands start to become more dehydrated and brittle. To help you out, we’ve rounded up a few of our favorite hair care products that contain hyaluronic acid. 

Shop Our Picks:

The Ordinary Hyaluronic Acid 2% + B5 Serum

Thanks to a combination of hyaluronic acid and Vitamin B5, this water-based serum helps to transform dry strands by packing in moisture. 

Shop: The Ordinary Hyaluronic Acid 2% Serum, $6.80

Inkey List Hyaluronic Acid Hydrating Hair Treatment

Formulated with optimized high and low molecular weight hyaluronic acids, this lightweight serum works to hydrate, reduce frizz, and add shine to your locks.

Shop: Inkey List Hyaluronic Acid Hydrating Hair Treatment, $7.99

Grow Gorgeous Original Hair Density Serum

Perfect for anyone looking to achieve thicker and  fuller locks, this scalp-stimulating serum uses a blend of hyaluronic acid, caffeine, and castor oil to boost your hair’s health.

Shop: Grow Gorgeous Original Hair Density Serum, $35.00

Will you be adding hyaluronic acid to your hair routine? Let us know in the comments below!

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Camille Nzengung

Camille Nzengung is a Features Editor at The Tease, where she covers all things hair. You can find her writing about the best hair products, the coolest hair trends, and all the exciting new hair launches.


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