Isntree

Isntree Green Tea Fresh Serum.

Serums

About this product

A lightweight hydrating serum made with green tea extract, designed to deliver antioxidants and oil control benefits across skin types.

Full ingredients

Camellia Sinensis Leaf Extract, Water, Butylene Glycol, Glycerin, Propanediol, Dipropylene Glycol, Niacinamide, 1,2-Hexanediol, Panthenol, Hydroxyacetophenone, Squalane, Ammonium Acryloyldimethyltaurate/VP Copolymer, Allantoin, Carbomer, Tromethamine, Betaine, Polyglyceryl-3 Methylglucose Distearate, Cetearyl Alcohol, Epigallocatechin Gallate, Glyceryl Stearate SE, Adenosine, Dipotassium Glycyrrhizate, Bacillus Ferment, Vigna Radiata Seed Extract, Camellia Japonica Flower Extract, Pinus Palustris Leaf Extract, Ulmus Davidiana Root Extract, Oenothera Biennis (Evening Primrose) Flower Extract, Pueraria Lobata Root Extract, Brassica Oleracea Italica (Broccoli) Sprout Extract

Guru Score

71%

Mixed

4 experts · Moderate agreement

What the gurus are saying

The serum's straightforward formula with a high concentration of green tea earns praise for working as a gentle buffer that hydrates without overwhelming the skin. Gurus note the texture is pleasing and the ingredient list refreshingly short, making it suitable for any skin type, though it was formulated with oily and acne-prone skin in mind. At 80 milliliters for thirty dollars, the value far outpaces most serums on the market.

Synthesized from 4 expert reviews · most recent take October 2025

What they liked

Generous size for the price
Simple formula, minimal ingredients
Pleasing lightweight texture

What they flagged

Nothing. None of the experts who reviewed it raised a problem.

Best for

Oily skin Combination skin

Type

SerumsDrops & dropper

Key actives

Niacinamide Squalane

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

Dr. Jenny Liu

323k subs

~Yay

"I believe it's at Sephora and they use a combination of green tea from Jeju Island, which is famous for green tea in Korea, along with green tea seeds that have additional antioxidant and calming soothing benefits. They have a serum, a moisturizer, even an eye cream. [...] It's really great at offering kind of calming, soothing benefits and the formulation from that line is really suitable for oily, acne-prone skin. I highly recommend checking out that line."

James Welsh

1.58M subs

~Nay

"Whilst I feel like green tea used to be very popular and hyaluronic acid used to be very popular too, people are all about other things now when it comes to hydration. I think even in Korea the brand isn't as popular as it used to be, and that's the thing is I feel like whilst the industry had all their kind of core collections they didn't evolve much and it all became very outdated and kind of old."

No BS Beauty

89k subs

~Yay

"This one's really nice for that, it's got some other good antioxidants in it. In my opinion this one's really good for oilier skin or for drier skin like in the summer or for a daytime serum or for layering with other products. It's really quite wonderful, not too expensive, and it really does the trick. Their toner version of it's great as well."

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"The Green Tea Fresh Serum from Isntree is a great [...] neutral serum, something without a ton of ingredients, something that's hydrating and something that acts as a buffer."

Top 5 Unique Anti-Aging Skincare Ingredients & Product Favorites

"Isntree has a really wonderful green tea line. This is their green tea serum which is wonderful, their emulsion's great, their lotion's great, and their cleanser I found to be a little bit drying but overall this stuff is really wonderful. I've repurchased it as well so definitely worth checking out."

Kelly Driscoll

90k subs

~Yay

"Green tea also has all those great anti-aging benefits too, so it's also a great line even if you're not oily or have acne-prone skin. This is one of the products in the line that I do think could work for any skin type. It's got such a pleasing texture to it."

What the evidence says.

Independent of what the gurus think, this is what the published research supports about the main active ingredients here.

Niacinamide

Niacinamide has evidence behind it for redness, uneven tone and supporting the skin barrier, and it is usually well tolerated even by skin that reacts to most things.

Source: DermNet

Humectants and emollients

Ingredients like these draw water into the surface layers and slow how fast it leaves. The evidence is for comfort, softness and hydration rather than for changing the structure of the skin.

Source: DermNet

Frequently asked.

What is Isntree Green Tea Fresh Serum?

A lightweight hydrating serum made with green tea extract, designed to deliver antioxidants and oil control benefits across skin types.

Is Isntree Green Tea Fresh 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 Green Tea Fresh Serum's Guru Score?

Isntree Green Tea Fresh 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.