The Real Science of Hydration: Why Your Skin’s Still Dry After Moisturising
You can apply the richest cream you own and still feel tight by lunchtime because dryness isn’t always a “use more moisturiser” problem. Very often, it’s a barrier + water-retention problem. If the skin barrier isn’t functioning well, water escapes quickly (even if you’ve just applied hydrating products), so the comfort you get is short-lived.
This is why Beta-Glucan is such a sensible hydrator to build around. Instead of giving you a brief, surface-level “plump”, it’s better suited to the real issue: helping skin feel like it can hold onto hydration more steadily, especially when you’re stuck in that cycle of tightness despite moisturising.
Why Moisturiser Isn’t Always Enough
First, it helps to separate dry from dehydrated. Dry skin is lacking oil, so it can feel rough, flaky, and easily irritated. Dehydrated skin is lacking water, so it tends to feel tight and look dull, and it can even happen when you’re oily. If you’re shiny but uncomfortable, dehydration plus irritation (often from cleansing or overdoing actives) is a common combination.
Hydration also works as a system: you need to add water, help the skin hold it, then seal it in. A moisturiser can help with the sealing part, but if you haven’t properly hydrated first—or if your barrier is compromised—you’re essentially “locking in” very little. That’s why the same cream can feel great for an hour, then suddenly your face feels tight again.
You’ll often hear this with hyaluronic acid too. HA binds water well, but if your barrier is stressed (or the air is dry from heating or air con), that hydration can feel fleeting. Beta-Glucan is a smarter approach when you want hydration that behaves more like long-term comfort, not a quick cosmetic boost.
What To Do Instead
Instead of chasing thicker creams, focus on hydration that stays put. Apply hydrating layers when your skin is slightly damp, then seal with a cream so evaporation is slowed. When tightness is persistent, treat it like a barrier issue: simplify your routine, be gentler with cleansing, and avoid stacking strong actives until your skin feels consistently comfortable again. On “stressed skin” days (cold weather, travel, post-exfoliation), swap your usual moisturiser for a more supportive barrier cream at night, and keep your mornings light but protected with SPF.
What Ingredients Should You Look For?
Look for ingredients that do three jobs: bind water, support the barrier, and reduce water loss.
Hydration Boosters
Like Beta-Glucan, glycerin, and hyaluronic acid help draw hydration into the skin, but they work best when followed by a moisturiser to keep that water from disappearing.
Barrier Soothers
Ingredients like panthenol (B5), ectoin, and centella (cica) are ideal when skin feels tight, sensitised, or easily irritated.
Barrier Builders
If dryness is persistent or flaky, barrier lipids such as ceramides, plus emollients like squalane, help make skin feel less “paper-dry” over time.
Moisture Lockers
And for sealing, you’ll often see ingredients like dimethicone or richer emollients in barrier creams, which can be especially helpful at night.
Build Your Routine With IUNIK
Start at the beginning: if your cleanser leaves you feeling squeaky or tight, hydration won’t last no matter what you put on afterwards. Centella Bubble Cleansing Foam is a gentler reset so your routine isn’t fighting dryness from step one.
Right after cleansing, Beta-Glucan Lacto Barrier Milk Essence is your “first drink” — the cushioning layer that makes everything feel more comfortable and helps reduce that immediate post-wash tightness.
Next, Beta-Glucan Power Moisture Serum is the core hydration step when your skin feels like it can’t hold onto moisture. This is where you’re building hydration that feels steadier, rather than relying on a cream to do all the work.
If you want an added “healthy-skin” boost once your tightness is under control, Propolis Vitamin Synergy Serum fits nicely as a supporting layer for glow and overall comfort.
When skin is properly stressed — rough, sensitised, or stuck in that “dry again an hour later” loop — Beta-Glucan 3X Barrier Cream is the night-time recovery step that helps reduce water loss and keep hydration in place.
And finally, don’t skip the protective layer: Beta-Glucan Barrier Sunscreen helps stop the daily UV stress that can keep your barrier in a compromised cycle, making it harder for hydration to feel consistent.
Centella Bubble Cleansing Foam
Gentle bubble wash cleanser
Centella Double Cleansing Duo
Soothing pore cleanse
Beta-Glucan Lacto Barrier Milk Essence
Barrier-firming milk essence
Beta Glucan Power Moisture Serum
Lightweight daily moisture serum
Propolis Vitamin Synergy Serum
Radiance + nutrition serum
Beta Glucan 3X Barrier Cream
Triple barrier repair cream
Beta Glucan Daily Moisture Cream
Lightweight daily hydration cream
Beta Glucan Barrier Sunscreen
Firming sun defense SPF
Hydration That Actually Lasts
If your skin is still dry after moisturising, it’s usually a water-loss + barrier issue—not a “more cream” issue. Focus on hydration that stays put, then seal it in consistently.
Layer Beta-Glucan Lacto Barrier Milk Essence → Beta-Glucan Power Moisture Serum, seal with Beta-Glucan 3X Barrier Cream when needed, and protect daily with Beta-Glucan Barrier Sunscreen.