Which IUNIK Sunscreen Is Right for You? A Complete Guide
SPF is the one skincare step that earns its place every single day of the year; not just summer, not just beach days, but as a non-negotiable final step every morning regardless of season, skin type, or how much time you'll spend outdoors. UV damage is cumulative, largely invisible while it's happening, and the single biggest driver of premature ageing and uneven skin tone.
The question isn't whether to wear sunscreen. It's which one to wear. IUNIK now offers three — each with a different texture, different core benefits, and a different ideal user. Before we break those down, here's a quick primer on what SPF numbers actually mean.
SPF and PA: What the Numbers Mean
SPF (Sun Protection Factor) measures how much UVB radiation a sunscreen blocks. SPF30 blocks approximately 97% of UVB; SPF50 blocks approximately 98%. The difference between SPF30 and SPF50 is smaller than most people assume — the jump from no protection to SPF15 is far more significant than the jump from SPF30 to SPF50.
PA (Protection Grade of UVA) is the Asian rating system for UVA protection; the rays that penetrate deeper into the skin and drive long-term ageing, pigmentation, and DNA damage. The more + signs, the higher the UVA protection: PA++ is moderate, PA+++ is high, PA++++ is the maximum rating available.
Both forms of protection matter. UVB causes burning and visible sun damage; UVA causes the slower, cumulative damage that shows up as wrinkles, dark spots, and loss of elasticity over years. A broad-spectrum SPF50+ PA++++ formula addresses both. All three IUNIK sunscreens meet that standard.
How to Apply Sunscreen Correctly
Even the best sunscreen underperforms if it's not applied correctly. Two points worth understanding before choosing a product:
- Use enough. The SPF on the label is based on a specific application amount — about ¼ teaspoon for the face and neck. Most people apply significantly less, which means real-world protection is lower than the label suggests. Applying a slightly more generous layer matters more than chasing the highest SPF number.
- Reapply. SPF degrades with UV exposure, sweat, and physical contact. Reapply every two hours during extended outdoor exposure. The Sun Water's water-thin texture and large 120ml format make reapplication during the day practical in a way that some cream SPFs aren't.
- Timing. Apply as the final step of your morning skincare routine, after moisturiser. Give it a moment to settle before applying makeup if needed.
The Three IUNIK Sunscreens
Centella Calming Daily Sunscreen
The Centella Calming Daily Sunscreen is a reliable, gentle daily SPF. It's formulated simply with centella asiatica and beta-glucan, two ingredients trusted by those with sensitive skin.
With 500,000ppb Centella asiatica for soothing and barrier-calming, this fragrance-free, colorant-free formula is ideal for sensitive and acne-prone skin that reacts poorly to typical sunscreens. It's the perfect starting point for those who find sunscreens too heavy, greasy, or reactive.
This soft cream texture is hydrating enough to replace a moisturizer in warm weather. It applies easily, leaves no white cast, wears well under makeup, and is tested for 24-hour UV persistence and sweat-proof claims.
Best for: sensitive, reactive, acne-prone, or redness-prone skin. Anyone for whom SPF has historically caused irritation.
Finish: soft cream, dewy.
Key ingredients: Centella Asiatica Extract (500,000ppb), Beta-Glucan, Niacinamide.
Beta Glucan Barrier Sunscreen
The Beta Glucan Barrier Sunscreen is active skincare, not just protection. This formula features an Aging-Shield Peptide™ Complex (Argireline Amplified, Goldrella Peptide, and Panax Ginseng Extract) clinically proven to improve skin elasticity, reduce fine lines, and offer antioxidant protection against UV and environmental damage.
Its serum-like Oil-in-Gel-in-Water texture is fast-absorbing, non-greasy, and dewy, justifying its place in a full routine by performing meaningful skincare alongside UV protection.
80% of the formula consists of skincare ingredients: Beta-glucan for deep, long-lasting hydration, and Greendiol® plus probiotic ferments to support skin barrier resilience. It is Dermatest Certified for sensitive skin and adheres to ISO standards for both UVB and UVA protection.
Best for: dry, mature, or barrier-compromised skin.
Finish: Oil-in-Gel-in-Water, dewy, serum-like.
Key ingredients: Beta-Glucan, Aging-Shield Peptide™ Complex (Argireline Amplified + Goldrella Peptide + Ginseng), Probiotics, Greendiol®.
Centella Calming Daily Sun Water
The Sun Water is the newest and most technically distinct sunscreen. Sun Water is a true, ultra-low viscosity water, invisible upon application, representing a completely different formulation approach.
Creating a water-textured SPF 50+ is difficult because it lacks traditional thickeners. The Sun Water solves this using a "micro-net" matrix that evenly distributes five UV filters, providing 12-hour, clinically proven protection with an invisible, weightless finish.
Containing 82% skincare, this formula blends Centella to soothe heat irritation with Niosome Panthenol for barrier repair. Hyaluronic Acid, Resurrection Plant, and Allantoin provide deep hydration. Non-comedogenic and safe for all skin types.
Best for: oily/combination skin finding light creams too heavy.
Finish: completely invisible. No perceptible residue.
Key ingredients: 5 UV filters + micro-net structure, 5 Centella-derived ingredients, Niosome Panthenol, Hyaluronic Acid, Resurrection Plant Extract.
Which One Is for You?
Not sure which to start with? If sensitivity is your concern, start with the Centella Calming Daily Sunscreen. If your skin is dry or showing signs of ageing, the Beta Glucan Barrier Sunscreen earns its place as an active skincare step. If texture has always been your reason for skipping SPF, the Sun Water removes that excuse entirely.
A Final Note on Consistency
The single biggest factor in whether sunscreen works for your skin long-term isn't which SPF number you choose — it's whether you actually use it every day. A formula you find comfortable enough to apply consistently will always outperform a higher-SPF formula you skip because it feels too heavy, too greasy, or too much. The best sunscreen is the one that earns a permanent place in your morning routine.
Centella Calming Daily Sun Water
Sun-calming water shield.
Beta Glucan Barrier Sunscreen
Firming sun defense SPF
Centella Calming Daily Sunscreen
Calming sun care SPF