Isntree

Ultra Low Molecular Weight Hyaluronic Acid Serum.

Serums

About this product

A lightweight serum formulated with 14 types of hyaluronic acid and deep sea water, designed to hydrate and plump the skin with minimal residue.

Full ingredients

Sea Water, Water, Methylpropanediol, Glycerin, Butylene Glycol, 1,2-Hexanediol, Betaine, Pentylene Glycol, Carbomer, Caprylyl Glycol, Allantoin, Tromethamine, Ethylhexylglycerin, Xanthan Gum, Panthenol, Malachite Extract, Hydrolyzed Hyaluronic Acid, Disodium EDTA, Glyceryl Acrylate/Acrylic Acid Copolymer, Glyceryl Glucoside, Sodium Hyaluronate, Potassium Hyaluronate, Hyaluronic Acid, Hydrolyzed Sodium Hyaluronate, Sodium Acetylated Hyaluronate, Hydroxypropyltrimonium Hyaluronate, Sodium Hyaluronate Crosspolymer, Dimethylsilanol Hyaluronate, Hydrolyzed Calcium Hyaluronate, Sodium Sulfated Hyaluronate, Madecassoside, Beta-Glucan, Sodium Stearoyl Hyaluronate, Sodium Oleoyl Hyaluronate

Guru Score

71%

Mixed

4 experts · Moderate agreement

4Gurus

2Yay

2Mixed

0Nay

What they liked

Fast-absorbing
Lightweight
Absorbs without sticky residue

What they flagged

Redundant with the toner

What the gurus are saying

Despite its fourteen types of hyaluronic acid, this serum absorbs quickly without stickiness and delivers a soft plumping effect. Gurus praise the lightweight formula and unscented nature, especially for those with really dry skin seeking visible hydration. However, some note it's quite similar to Isntree's toner, so you might not need both in your routine unless you're chasing that skin-flooding trend.

Synthesized from 4 expert reviews · most recent take February 2025

Type

SerumsDrops & dropper

Key actives

Hyaluronic acid

Formula notes

Fragrance-freeNo drying alcohol

Where to buy

Amazon → Google → iHerb →

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What the gurus are saying.

Every take we've logged from this product's reviews across YouTube. Click any row to watch the moment they said it.

All takes Yay takes Nay takes Mixed takes Hide sponsored

April Basi

71k subs

~Mixed

"Another product I fell for the hype on is the Isntree Molecular Hyaluronic Acid Serum. This one has fourteen types of hyaluronic acid, and I was a little terrified it had that much hyaluronic acid in it, but I wanted to try it anyway. It has sodium hyaluronate, which is pretty standard, potassium hyaluronate, and hyaluronic acid. If you're really, really dry, this might be a good product for you to explore."

Dr. Jenny Liu

322k subs

~Mixed

"It's a fast-absorbing serum that contains [...] deep sea water along with 14 different types of hyaluronic acid and other humectants. Just like the toner, it is lightweight, fast-absorbing, and pretty much leaves behind minimal residue. If that is something that you like and enjoy using, I think this would be a great hyaluronic acid based serum for you. However, I feel like it is very much the same as a toner, so I personally don't feel compelled that you need to have both in your routine unless you're really trying to achieve that skin flooding trend. [...] It's really not necessary to have both. I think just pick one based on personal preference and what you enjoy using more."

AliceintheRabbitHole

59k subs

~Yay

"I like the serum from this line as well, although I don't use it quite as much as the toner myself. This one too doesn't have that sticky sensation, it just sinks right into your skin with no tackiness, it's completely unscented, and I feel like you get a soft plumping effect from it."

Cassandra Bankson

2.46M subs

~Yay

"Their hyaluronic acid serum, which I actually stopped using, but is amazing. One of the best hyaluronic acid serums I've ever used. It has eight different forms of hyaluronic acid."

Frequently asked.

What is Isntree Ultra Low Molecular Weight Hyaluronic Acid Serum?

A lightweight serum formulated with 14 types of hyaluronic acid and deep sea water, designed to hydrate and plump the skin with minimal residue.

Is Isntree Ultra Low Molecular Weight Hyaluronic Acid Serum worth it?

The gurus mostly approve it, but with enough reservations to keep it in the middle at a Guru Score of 71%.

What is Isntree Ultra Low Molecular Weight Hyaluronic Acid Serum's Guru Score?

Isntree Ultra Low Molecular Weight Hyaluronic Acid Serum holds a Guru Score of 71%. That is our read on how warmly the experts talk about it, based on the verdicts of 4 expert reviewers we have collected.