The ISNTREE Green Tea Fresh Serum 50ml bottle standing upright against a soft, bright green background.

Jeju Green Tea Fresh Serum

Isntree’s Green Tea Fresh Serum harnesses the antioxidant power of Jeju Island’s green tea to visibly calm, balance, and hydrate. This lightweight, fast-absorbing formula is designed for sensitive skin, helping to control excess sebum and soothe irritation for a refreshed complexion.
An overhead flat lay of the serum bottle, fresh green tea leaves, and a small dropper on a clean, light surface.

Thoughtfully formulated

This serum combines potent botanicals with skin-supportive actives in a clean, transparent formula. The 77% Jeju Green Tea base provides a concentrated source of calming EGCG, while panthenol and allantoin are included to strengthen your skin’s protective barrier.
Visible skin balance

Achieve balanced, calm, and refreshed skin

Close-up of clear, green-tinted serum droplets being dispensed from a glass dropper onto a clean surface.

Soothe and calm sensitive skin

Formulated with 77% Jeju Green Tea Extract, this serum delivers a potent dose of antioxidants and EGCG. It helps to calm irritation and soothe redness, promoting a more even and comfortable skin feeling throughout the day.
A person gently patting a small amount of clear serum onto their cheek.

Control oil for a shine-free finish

The lightweight, fast-absorbing formula helps regulate excess sebum production without stripping moisture. This creates a balanced, shine-free finish that feels comfortable and hydrated, not tight or greasy.
The serum bottle placed on a green leaf with water droplets, emphasizing a natural and hydrating theme.

Strengthen your skin barrier

Key ingredients like Panthenol and Allantoin work to fortify your skin’s natural barrier. This helps reduce moisture loss and protects your skin from daily environmental stressors, leading to a healthier complexion over time.
Perfect for you if

When you need balanced, calm skin

A close-up of a person's face showing calm, even-toned skin in soft, natural light.
For sensitive skin

Soothing irritated skin

The soothing green tea and calming ingredients help reduce visible redness and irritation, providing comfort and promoting an even skin tone.
A person patting their T-zone area, with the serum bottle visible in the background.

Controlling daily shine

Oily skin
It regulates excess sebum without drying, providing a shine-free, hydrated finish that feels comfortable all day and helps keep pores looking clear.
The serum being absorbed quickly into the skin on the back of a hand.
For daily hydration

Layering under moisturizer

Use it as a lightweight hydrating step in both AM and PM routines to maintain moisture balance and prepare skin for sunscreen or nighttime repair.
A person's hand holding the serum bottle over a clean, light-colored countertop.
How to apply

Simple steps for best results

Incorporate this serum into your daily routine for optimal results. Its lightweight formula makes it easy to layer and is suitable for both morning and evening use to maintain skin balance and hydration throughout the day.
A person's hand holding the serum bottle over a clean, light-colored countertop.

Apply to cleansed skin

Begin with a clean, toned face to prepare your skin for the serum. Dispense two to three drops onto your fingertips or directly onto your skin for precise application.
A close-up of fingertips gently pressing the clear serum onto the cheek area.

Pat gently into skin

Gently press the serum into your face and neck using upward motions. Avoid rubbing; let the lightweight formula absorb fully to deliver its soothing benefits.
The serum bottle placed next to a small jar of moisturizer on a bathroom shelf.

Seal with moisturizer

Follow with your favorite moisturizer to lock in hydration and seal the serum’s benefits. This final step helps maintain a balanced, comfortable complexion throughout the day.
SensibleSkincare
SensibleSkincare
I have sensitive, combination skin that gets easily irritated. This serum has been a game-changer for my summer routine. It absorbs instantly, doesn't feel sticky, and actually helps control the oiliness in my T-zone while keeping my cheeks hydrated. My skin feels calm and balanced all day.
GlowSeeker
GlowSeeker
I was looking for something to help with minor redness and occasional breakouts. The green tea in this feels so soothing. After a few weeks, my skin texture feels smoother and the redness around my nose has reduced. It layers perfectly under my moisturizer and sunscreen without pilling.
CleanBeautyFan
CleanBeautyFan
I appreciate that this is fragrance-free and packed with good ingredients like green tea and panthenol. It feels pure and effective. My skin drinks it up, and I've noticed my pores look a bit clearer and my overall complexion is more even. It's a staple I keep repurchasing.
MorningRoutineLover
MorningRoutineLover
This is my go-to morning serum. It's so lightweight it feels like water, but it provides lasting hydration. My makeup goes on smoothly over it, and I stay less shiny throughout the day compared to other serums I've tried. It's refreshing and doesn't break me out.
CuriousNewUser
CuriousNewUser
I bought this on a recommendation and was pleasantly surprised. The texture is lovely and it sinks in so fast. I use it day and night, and my skin feels more resilient and less reactive. It's a simple, effective step that has made a noticeable difference in my skin's comfort.
Real user experiences

What people are saying

Hear from users who have experienced the serum’s balancing and soothing effects firsthand, particularly those with sensitive or combination skin seeking lightweight hydration and oil control.

Your questions, answered

Common questions help you understand how this serum fits into your routine, what to expect for your skin type, and how to get the best results from its key ingredients like Jeju Green Tea and EGCG.
Yes, this serum is an excellent choice for sensitive skin. Its formula is designed to be gentle, featuring soothing green tea extract and calming ingredients like allantoin. It’s fragrance-free to minimize the risk of irritation and focuses on supporting a healthy skin barrier.
For best results, apply a few drops to your face after cleansing and toning, both morning and evening. Gently pat it into your skin until fully absorbed. You can follow with a moisturizer to lock in hydration. Its lightweight texture layers perfectly under other products.
This serum is designed to balance oil production, not just mattify. While it helps control shine, its hydrating formula with panthenol and green tea ensures your skin retains essential moisture. It aims for a comfortable, balanced feel rather than a dry or tight finish.
The star ingredient is 77% Jeju Green Tea Extract, rich in antioxidants and EGCG to soothe and protect. It also contains Panthenol for hydration and barrier support, and Allantoin to calm irritation. The formula is clean, transparent, and focused on effective botanicals.
The serum has a very light, almost water-like texture that absorbs quickly into the skin. It leaves a fresh, non-sticky, and non-greasy finish, making it ideal for all skin types, especially those who dislike heavy or residue-feeling products.
Yes, this serum is designed to complement a full skincare routine. You can easily use it with other Isntree products like the Green Tea Toner for enhanced results, or integrate it with your existing cleanser and moisturizer. Its lightweight formula makes it a versatile addition.
Complete your routine

Explore the full Green Tea collection

Discover more from Isntree’s Green Tea line and other functional collections designed to work in harmony, offering complete solutions for balanced, sensitive, and healthy-looking skin.
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The ISNTREE Green Tea Fresh Toner bottle, the primary product hero, displayed against a soft, natural green background evoking freshness.

Isntree Green Tea Toner

The ISNTREE Green Tea Fresh Toner is a quintessential K-Beauty staple, harnessing the antioxidant power of Jeju Island green tea. It uniquely balances effective sebum control with deep, lightweight hydration, making it a must-have for achieving a clear, refreshed, and shine-free complexion without irritation.