Serene · Brand profile
IsNtree
Hyaluronic acid that actually absorbs, not just sits there promising miracles.
2 products in Serene's catalog
IsNtree is a Seoul-based brand, launched around 2018, that's quietly carving out space in the everyday K-beauty essentials category. They're not one of those flashy Gangnam startups chasing viral essences or sheet masks; instead, they focus on no-nonsense hydration and sun protection, with a vegan twist that feels genuine rather than performative. What sets them apart is their emphasis on hyaluronic acid in forms that actually penetrate, without the heavy silicones or fragrances that bog down so many drugstore options. They're competing against the usual suspects like COSRX for reliable basics and Biore for sunscreens, but IsNtree edges them out with a lighter, more skin-like feel that's perfect for layering under makeup or just surviving a humid commute. I first noticed them at Olive Young during my year in Mapo-gu, where they were stocked in the affordable sun aisle, not hyped as luxury. It's the kind of brand that doesn't need a big backstory to work; their products just show up and do the job, which is rare in a market full of overpromising.
Known for
IsNtree built their rep on hyaluronic acid done right, specifically ultra-low molecular weight versions that sink in deep without leaving a sticky film. Their formulation philosophy is simple: clean, vegan ingredients that prioritize barrier support and UV defense, skipping irritants like alcohol or synthetic scents. The hyaluronic acid daily sun gel is their standout, blending SPF50+ with multi-weight HA for hydration that lasts through the day. They've got a loyal following for serums that deliver real plumpness, not just temporary dewiness. From my time testing similar lines at Bergdorf's, I appreciate how they avoid the fluff; it's hydration science, not spa vibes.
Who it's for
This is for folks with normal to combination skin who want lightweight hydration and sun protection without fuss or fragrance. If you're oily or acne-prone like I was in my breakout days, their non-comedogenic formulas won't clog pores. Budget-wise, it's drugstore-friendly at under $20 a pop, ideal for beginners building a simple routine. Skip if you have very dry skin needing richer creams, or if you're chasing high-end glow; IsNtree is about function over fantasy.
Where to start
Start with the Hyaluronic Acid Daily Sun Gel 50ml, their bestseller that layers like a dream under moisturizer or makeup, giving SPF50+ without white cast or greasiness. Pair it with the Ultra-Low Molecular Hyaluronic Acid Serum 1.69 fl.oz if your skin drinks up water-based actives; it's vegan, sinks fast, and preps everything else to work better. These two cover hydration and protection basics without overwhelming a three-step routine.
The IsNtree lineup
Every IsNtree product in the Seoul Rite catalog, ranked by buyer rating.
