Beta-Glucan Barrier Sunscreen SPF 50+
Beta-Glucan Barrier Sunscreen SPF 50+
Product Description
Product overview
iUNIK Beta-Glucan Barrier Sunscreen SPF 50+ PA++++ is a lightweight K-beauty chemical sunscreen built on a triple-layer oil-in-gel-in-water structure. It pairs a five-filter UVA/UVB system with beta-glucan, peptides, and skin-loving ferments to protect, deeply hydrate, and reinforce the skin barrier — all with a serum-like, white-cast-free finish.
Five-Filter Defense
A 5-layer modern organic filter system delivers broad-spectrum SPF 50+ PA++++ covering the full UVA and UVB range with photostable protection.
Texture & feel
SENSORYFive-Filter Defense
A 5-layer modern organic filter system delivers broad-spectrum SPF 50+ PA++++ covering the full UVA and UVB range with photostable protection.
Beta-Glucan Hydration
Beta-glucan and GreenDiol® flood skin with lasting moisture and reinforce the barrier — the brand claims it holds more water than hyaluronic acid.
Aging-Shield Peptides
Argireline (Acetyl Hexapeptide-8) plus Panax ginseng help soften the look of fine lines and support elasticity for a slow-aging effect.
Zero White Cast
The triple-layer oil-in-gel-in-water texture melts in like a serum and dries down invisibly across all skin tones.
Safety & compatibility
SAFEUses only modern, large-molecule UV filters with no oxybenzone or octinoxate, so it's generally considered pregnancy-friendly. Always confirm with your doctor.
Contains stearic acid, stearyl alcohol and chlorella ferment, which can feed Malassezia yeast — not ideal for fungal-acne-prone skin.
Fragrance-free, alcohol-free and EU-allergen-free, with soothing allantoin, panthenol and beta-glucan to calm and comfort.
Free from oxybenzone/octinoxate, but it does contain butyloctyl salicylate; rinse-off impact on reefs isn't fully studied.
Plays well with most serums and treatments. Apply as the final daytime step over your hydrating and treatment layers.
As with many chemical sunscreens, it may sting if applied too close to the eyes — keep a small margin around the eye area.
Ingredient breakdown
INGREDIENTSFive-Filter UVA/UVB System ~5–10% eachProven
A blend of next-generation organic filters — Ethylhexyl Triazone, Diethylamino Hydroxybenzoyl Hexyl Benzoate (DHHB), Drometrizole Trisiloxane (Mexoryl XL), Terephthalylidene Dicamphor Sulfonic Acid (Ecamsule/Mexoryl SX) and Diethylhexyl Butamido Triazone — that together cover the entire UVA and UVB spectrum.
- UVB: Ethylhexyl Triazone is one of the most effective, photostable UVB filters, peaking around 314nm.
- UVA: DHHB delivers high UVA protection (320–400nm); Ecamsule absorbs 290–400nm.
- Broad + stable: Drometrizole Trisiloxane covers both UVA (344nm) and UVB (303nm) and is highly photostable.
Beta-Glucan ~0.1–1%Promising
A polysaccharide from yeast and fungi cell walls that hydrates deeply, soothes, and helps reinforce the skin's natural barrier while acting as an antioxidant against free radicals.
- Hydration: Binds large amounts of water; iUNIK claims it holds up to ~20% more moisture than hyaluronic acid.
- Repair: Studies suggest it can penetrate skin to support wound healing and may reduce the look of wrinkles.
Acetyl Hexapeptide-8 (Argireline) ~3–10%Promising
A popular "Botox-like" peptide that helps relax micro-muscle movements, potentially minimizing the appearance of expression lines while supporting overall skin firmness.
- Smoothing: May soften the look of fine lines by reducing repeated micro-movements.
- Support: May also help support collagen for firmer-feeling skin.
Panthenol & Allantoin ~0.1–2%Proven
A classic soothing duo. Panthenol (pro-vitamin B5) hydrates and supports the skin's healing process, while allantoin calms irritation and gently encourages cell turnover.
- Panthenol: A humectant that binds water and aids skin recovery.
- Allantoin: Recognized by the FDA as a skin protectant in OTC products up to 2%.
Ferment & Ginseng Complex Trace–1%Promising
Lactobacillus and chlorella ferments plus Panax ginseng extract round out the formula with antioxidant and barrier-supporting benefits for a calmer, more resilient complexion.
- Barrier: Lactobacillus ferment has been shown to support ceramide levels and reduce transepidermal water loss.
- Antioxidant: Panax ginseng helps shield skin from free-radical damage.
42 ingredients
Water, Dibutyl Adipate, 2,3-Butanediol, Ethylhexyl Triazone, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Drometrizole Trisiloxane, Terephthalylidene Dicamphor Sulfonic Acid, 1,2-Hexanediol, Butyloctyl Salicylate, Behenyl Alcohol, Tromethamine, Diethylhexyl Butamido Triazone, Diisopropyl Sebacate, Vinyldimethicone, Arachidyl Alcohol, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Methyl Methacrylate Crosspolymer, Caprylyl Methicone, Batyl Alcohol, Stearic Acid, Sodium Polyacryloyldimethyl Taurate, Arachidyl Glucoside, Polyacrylate Crosspolymer-6, Stearyl Alcohol, Allantoin, Ethylhexylglycerin, Panthenol, Lecithin, Caprylic/Capric Triglyceride, Microcrystalline Cellulose, Cellulose Gum, Glucose, Butylene Glycol, Propanediol, Beta-Glucan, Maltodextrin, Chlorella Ferment, Lactobacillus Ferment, Panax Ginseng Extract, Sodium Benzoate, Glyceryl Caprylate, Acetyl Hexapeptide-8.
Where it fits in your routine
ROUTINEAlways the final step of your morning routine — apply after moisturizer and before makeup. Reapply every 2 hours of sun exposure.
How to use
HOW TO USEApply Generously
As the last step of your AM skincare, dispense about two finger-lengths for the face and neck to reach the labeled SPF.
Spread Evenly
Gently massage over face and exposed areas for full, even coverage, then let it set for 1–2 minutes.
Layer Under Makeup
Once absorbed, apply makeup as usual — the serum-like finish helps makeup sit and last well.
Reapply
Reapply every 2 hours of direct sun, and after sweating or swimming, for continued protection.
Who is it for?
WHOPerfect for you if:
- You want high SPF 50+ PA++++ with zero white cast
- You have dry, dehydrated or normal skin that needs extra moisture
- You like anti-aging peptides built into your sunscreen
- You prefer fragrance-free, vegan, cruelty-free formulas
- You dislike heavy or greasy sunscreen textures
Consider alternatives if:
- You're fungal-acne (malassezia) prone — it contains triggers
- You specifically need US-FDA-approved UV filters
- You want a true matte finish for very oily skin
- You prefer mineral-only (zinc/titanium) sunscreens
- You react to fatty alcohols
Skin type compatibility
SKIN TYPESBeta-glucan and GreenDiol® deliver lasting moisture without feeling heavy or greasy.
Comfortable serum-like feel paired with strong, broad-spectrum protection.
Lightweight and balanced; a light setting powder can help control the T-zone.
Absorbs fast with low residue, though the finish is natural rather than fully matte.
Fragrance- and allergen-free with soothing actives, but it's a chemical sunscreen — patch test first.
Low comedogenic rating, but not fungal-acne safe — best for non-malassezia breakouts.
Results timeline
8–12 WEEKSUV Protection Active
Once applied and set, broad-spectrum SPF 50+ shields against roughly 98% of UVB rays plus strong UVA defense.
100% on applicationHydration & Comfort
Skin feels softer and more hydrated right away, with no tight or greasy after-feel.
64% noticedCalmer, Smoother Barrier
Consistent daily use supports a more comfortable, less reactive skin barrier.
~55% noticedAnti-Aging & Even Tone
Sustained SPF plus peptides help prevent new photo-aging, fine lines and dark spots over time.
~45% noticedRatings by platform
14+ REVIEWSPros & cons
BALANCEDPraised
- High, photostable SPF 50+ PA++++ five-filter protection
- Genuinely no white cast across skin tones
- Hydrating beta-glucan plus barrier-supporting ferments
- Fragrance-free, vegan and cruelty-free
- Bonus anti-aging peptides in a sunscreen
Criticized
- Not fungal-acne (malassezia) safe
- UV filters aren't FDA-approved (limited US availability)
- Finish too dewy for those wanting full matte
- 60ml empties quickly with correct reapplication
- Limited long-term reviews (newer launch)
Budget-friendly alternatives (dupes)
DUPESCult-favorite chemical sunscreen with the same no-white-cast, comfortable finish. Uses rice and probiotics instead of beta-glucan, with similar hydration at a lower price (50ml).
Same brand, centella-focused and very soothing for reactive skin. Less hydrating and without the peptide complex, but the most affordable iUNIK SPF (60ml).
An ultra-light, truly invisible daily filter. Fewer treatment actives and lighter on hydration, but excellent as a barely-there everyday SPF (50ml).
Comparison with competitors
SIDE-BY-SIDESKIN1004 Hyalu-Cica Sun Serum
Storage & shelf life
12 MONTHS12 months after opening
Store in a cool, dry place away from direct sunlight and heat
Squeeze tube (60ml)
Yes — 60ml is under the 100ml carry-on limit
Frequently asked questions
FAQGenerally, yes. It uses only modern, large-molecule UV filters and contains no oxybenzone or octinoxate — the chemical filters most often flagged during pregnancy. Its large-molecule filters have very low skin penetration. As always, confirm with your OB-GYN or dermatologist before adding any product during pregnancy.
No. It contains stearic acid, stearyl alcohol and chlorella ferment, which can feed Malassezia yeast. If you're prone to fungal acne, a fully malassezia-safe option like the SKIN1004 Hyalu-Cica Sun Serum may suit you better.
Yes. Apply your treatment serums first and use this sunscreen as the final morning step. Reserve actives like retinol and AHA/BHA for your nighttime routine, and keep daily SPF on top during the day to protect newly resurfaced skin.
It shines on dry, dehydrated, normal and aging skin thanks to beta-glucan and peptides. Combination and oily skin can enjoy it too, though the finish is natural rather than fully matte. It's not the best fit for fungal-acne-prone skin.
UV protection is immediate once applied and set. Hydration and comfort are usually noticeable from day one, while barrier-strengthening and anti-aging benefits from the peptides build gradually over roughly 4 to 12 weeks of consistent use.
It's always the last step of your morning skincare — after your toner, serum and moisturizer, and before any makeup. Sunscreen should sit on top of your skincare, not underneath it.
It has a low comedogenic rating (around 2/5) and is marketed as non-comedogenic, so it's unlikely to clog pores for most people. Keep in mind it isn't fungal-acne safe, which is separate from clogged pores — patch test if you're easily congested.
About 12 months after opening (PAO). Because sunscreen filters can degrade over time, use it within its shelf life and replace it once the PAO period passes to ensure you're getting full SPF protection.
Verdict: The iUNIK Beta-Glucan Barrier Sunscreen is a standout daily SPF for dry, normal and aging skin that wants protection plus treatment in one step. Its five-filter UVA/UVB system delivers serious, photostable SPF 50+ PA++++ with genuinely no white cast, while beta-glucan, peptides and ferments hydrate and reinforce the barrier. The main caveats: it isn't fungal-acne safe, the filters aren't FDA-approved (limiting US availability), and the natural finish may feel a touch dewy for very oily skin. For everyone else seeking a hydrating, modern K-beauty sunscreen, it's an easy recommendation.
Product Overview
Quick product notes are a great way to check if a product is free from commonly avoided ingredients by skincare enthusiasts. These preferences come about for different reasons depending on the ingredient such as personal experiences, sensitivities, health preferences & etc.
Just because a product is not free from a common preference does not mean it's a bad product! You can make a personal decision whether or not you want to use a product that contains these ingredients or not - click the labels of the preference to read more about them.
Quick Product Notes
Ever used a product that promised a certain effect but provided no results? It might not have contained any notable ingredients that could have been responsible for that promised effect. It doesn't matter what the marketing or packaging «promises» it can do, if it doesn't contain anything that can help - then the likelihood of it helping is low.
We help you identify key notable ingredients that have been shown to help with effects such as acne-fighting, brightening, UV-protection, wound healing & anti-aging to help you achieve your skincare goals smarter. Please note that different notable ingredients have varying levels of research behind them, some are extremely well proven yet some have mixed research in their efficacy.
Just because a product doesn't contain any notable ingredients doesn't mean it's bad. And a product with notable ingredients (or even many) doesn't necessarily guarantee the efficacy of the product performing these effects either. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine this.
Be smart and use this as just a starting point for you to make more informed and smarter choices and compare it with reviews to see if the product is right for you
Notable Effects & Ingredients
Why are some products great for some people and horrible for others? Well everyone has different skin types and different reactions to the same ingredients.
We've identified a range of ingredients that are commonly regarded as potentially good or bad for those with Dry, Oily/Acne-Prone or Sensitive skin.
A product that contains good or bad ingredients for your skin type doesn't always flat out make the entire product good or bad for your skin. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine your skins reaction.
One of the best ways to use this section is to troubleshoot products you've had bad experiences with in the past. Check if it contains any of the marked ingredients to point out suspect ingredients to avoid in the future!
Ingredients Related to Skin Types
Ingredient Safety Breakdown refers to the percentage % of ingredients in different risk categories as classified by EWG (Environment Working Group) if they are available. There are almost endless cosmetic ingredients and they are one of the few organisations globally that have assigned ratings to a lot of the more commonly used ingredients which is why we reference them.
EWG is seen by many to be more on the alarmist side in their assignment of health ratings resulting in rating ingredients as riskier than they actually are. We recommend using this a reference point rather than a strict guide of ingredient safety and to always do further research if into ingredients that you may find suspect.
Ingredient Safety Breakdown
Product ingredient list
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
| 1 |
Water
Solvent, Skin Conditioning
|
|
|
| 0 |
Dibutyl Adipate
Emollient, Skin Conditioning, Solvent
|
|
|
| 0 |
2,3-Butanediol
|
|
|
| 1 |
Ethylhexyl Triazone
Uv Absorber, Uv Filter
|
|
|
| 2 |
Diethylamino Hydroxybenzoyl Hexyl Benzoate
Uv Absorber, Uv Filter
|
UV Protection
|







