ISNTREE
Hyaluronic Acid SPF 50+ Sunscreen
Key ingredient: Hyaluronic Acid
Compare prices
Also available at
Prices above compare LookFantastic, Boots and Jolse only. Tap below to check other retailers.
Live price not available - check current price on retailer site.
Prices are refreshed daily but may change throughout the day. Please confirm the final price on the retailer's site before purchase.
For users who want the K-beauty multi-MW hyaluronic acid hydration story *in their sunscreen* — the ISNTREE Hyaluronic Acid SPF 50+ delivers broad-spectrum UV protection on top of the same multi-molecular-weight HA complex that made the brand the K-beauty hydration reference.
The ingredient story
Hero ingredient
Multi-Molecular-Weight Hyaluronic Acid + SPF 50+ PA++++ Filter Complex
Concentration
Multiple HA molecular weights (ISNTREE's signature 14-MW philosophy applied within an SPF50+ sunscreen base). UV protection meets EU SPF and PA++++ standards.
Deep-dive
Read the full guide →How it works
Different HA molecular weights work at different skin depths — high-MW (1+ MDa) holds water on the surface and plumps fine lines, low-MW (under 500,000 Da) penetrates the upper stratum corneum for deeper hydration. Stacking them in one product delivers comprehensive hydration in a way single-MW products cannot. The chemical UV filter complex absorbs UVA and UVB radiation, providing broad-spectrum protection without the heavy mineral-cast Western SPFs often produce.
What the evidence shows
Multi-MW HA formulations have been shown to outperform single-MW products in clinical hydration retention studies (see /ingredients/hyaluronic-acid for the molecular weight science). SPF50+ PA++++ is the highest UV protection rating used in Asia (UVA protection 16x+ baseline).
Chemical sunscreen filters may irritate users sensitive to oxybenzone-class actives. Patch test on the inner forearm before face application if you have very reactive skin.
The brand
Philosophy
“Apply Korean multi-MW hyaluronic acid logic across every product format — toner, serum, sunscreen, eye cream — not just the obvious HA serums.”
ISNTREE built its brand on a single thesis: the K-beauty multi-MW hyaluronic acid approach (14 different molecular weights of HA stacked in one formulation) is significantly better than the single-MW Western default, and that approach should apply across every product type. The Hyaluronic Acid Toner became the breakout product (£15 for 300ml of a 14-MW formulation that competes with Western serums at 5x the price), and ISNTREE has since extended the multi-MW HA philosophy into serum, sunscreen, eye cream, and cleansing balm. This sunscreen is the hybrid play: it puts the HA hydration alongside SPF protection in a single product, removing one whole step from a morning routine.
Where this fits in your routine
Routine step
Sunscreen — the final morning step, applied over moisturiser
Morning: cleanse → toner → essence → active serum → moisturiser → ISNTREE HA Sunscreen → makeup (optional) Evening: not applicable — sunscreen is morning-only.
Reapplication note: Stick or powder sunscreen on top is the realistic way to reapply during the day without disturbing makeup.
Pregnancy-safe.
Pairs especially well with
ISNTREE Hyaluronic Acid Toner — pair the toner under the sunscreen for a fully HA-stacked morning routine
Beauty of Joseon Dynasty Cream — moisturiser under the sunscreen — the HA in both layers compound the hydration
Numbuzin No.5+ Vitamin-Niacinamide Serum — AM brightening serum + HA sunscreen = a complete morning routine in 3 products
Full ingredients
Free from
Full INCI ingredient list (manufacturer)
Water, Ethylhexyl Methoxycinnamate, Glycerin, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Methylpropanediol, Caprylic/Capric Triglyceride, Ethylhexyl Salicylate, Cetearyl Alcohol, Niacinamide, Sodium Hyaluronate, Hyaluronic Acid, Hydrolyzed Hyaluronic Acid, Hydrolyzed Sodium Hyaluronate, Sodium Hyaluronate Crosspolymer, Hydroxypropyltrimonium Hyaluronate, Acetyl Glycyl Beta-Alanine, Centella Asiatica Extract, Squalane, Glyceryl Stearate, Stearic Acid, Cetearyl Glucoside, Behenyl Alcohol, Carbomer, Polyacrylate Crosspolymer-6, Tromethamine, Phenoxyethanol, Disodium EDTA, Tocopherol
What real users say
“Sunscreen that actually hydrates instead of stripping. After three months I can confirm the HA layer is real — my skin feels plumper at 4pm than it did at 9am before this product.”
— r/AsianBeauty, 2024
“No white cast on my Asian skin tone. No pilling under foundation. SPF50+ that I actually want to wear daily — for someone who used to skip sunscreen, this is the product that changed that.”
— TikTok review with 800k views
“I switched from a £45 European brand SPF that always felt heavy. ISNTREE delivers equivalent UV protection at one-third the price with a much better skin-feel.”
— Cult Beauty verified review
Texture / feel
Lightweight cream-fluid finish — sits between satin and dewy depending on how much you apply. Faint clean scent (no added fragrance). Layers cleanly under foundation and concealer. Slightly more hydrating finish than the Beauty of Joseon Relief Sun, suited for drier skin types or winter use.
Buying authentic
Verified UK retailers
Counterfeit warning
ISNTREE packaging features a soft pastel-pink tube with a fine print batch code on the base. Avoid third-party Amazon UK marketplace sellers — counterfeit ISNTREE sunscreens have been reported.
This page was last reviewed on 2026-05-19. We update product storytelling when formulation, retailer availability, or evidence changes meaningfully.
About this product
Hydrating SPF 50+ sunscreen that also acts as a moisturiser — no white cast, perfect under makeup.
Why Hyaluronic Acid works
Hyaluronic Acid attracts and holds up to 1,000× its weight in water, plumping dehydrated skin from within.
