Expert Score8.6
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Isntree•product
Isntree Ultra-Low Molecular Hyaluronic Acid Serum
14-type hyaluronic acid serum with an ultra-low 329 Da molecular variant for intra-dermal hydration and madecassoside calming in a fragrance-free 50ml formula
Expert Rating
8.6/10
Best Pricing & Availability
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The Analysis
Quick Specs
Price$22
Ease Of UsePress a small amount onto clean palms and gently pat into skin until absorbed; no special tools, timing, or prior skincare knowledge required
Bottle Size50
Skin TextureUltra-thin water serum; absorbs within seconds leaving a velvety-smooth hydrated finish with no stickiness or weight
Expert Review Summary
Isntree launched the Ultra-Low Molecular Hyaluronic Acid Serum in November 2023, advancing the brand's hydration science with 14 distinct types of hyaluronic acid. The key differentiator is an ultra-low molecular HA at 329 Daltons, small enough to penetrate beyond the stratum corneum for intra-dermal moisture delivery. The formula is enriched with mineral-rich deep seawater from Ulleung Island, madecassoside for calming and barrier support, and glyceryl glucoside for extended moisture retention. It is vegan-certified and hypoallergenic-tested, free from fragrance and high-concentration exfoliants.
At approximately 22 USD for 50ml, it delivers exceptional cost-per-ml value for K-beauty beginners building a minimal routine. The water-thin serum absorbs in seconds with no residue and sits comfortably as the first step under all subsequent serums, creams, and SPF. Its gentle, one-ingredient-category focus makes it an ideal entry point for anyone new to K-beauty who wants visible plumping hydration without the risk of active-ingredient overload.
Technical Specifications
Price$22
Ease Of UsePress a small amount onto clean palms and gently pat into skin until absorbed; no special tools, timing, or prior skincare knowledge required
Bottle Size50
Skin TextureUltra-thin water serum; absorbs within seconds leaving a velvety-smooth hydrated finish with no stickiness or weight
Sebum Control2
Fragrance Free Yes
Gentle Formula Yes
Pigment Fading2
Value For Money9
Hydration Level10
Non Comedogenic Yes
Pore Refinement4
Brand ReputationIsntree is a clinical-first Korean brand with a loyal following among skincare enthusiasts for formulation transparency and effective, budget-accessible hydration actives
Calming Efficacy7
Retinol EfficacyNone; retinoid-free hydration-first formula suitable for all skin types including sensitive and compromised
Clinical Evidence No
Peptide ComplexityNone; formula concentrates on 14 HA variants and barrier-supporting actives without peptide addition
Firming Performance4
Niacinamide Percent0
Centella Cica Content Yes
Pdrn Or Exosome Content No
Ceramide Barrier Repair No
Hypoallergenic Testing Yes
Layering CompatibilityFirst step after cleansing due to water-thin consistency; absorbs fully in seconds and allows all subsequent serums, creams, and SPF to layer without interference or pilling
Azelaic Or Transexamic Acid No
Niacinamide ConcentrationNo niacinamide; hydration and plumping come entirely from 14 HA variants spanning ultra-low to high molecular weights