Phyaluronic®, our plant-based marine glycan derived from a sustainably cultivated green seaweed species, shares many properties with hyaluronic acid (HA)—yet it brings new advantages in performance, resilience, and sustainability. Like HA, it is an extraordinary humectant, capable of drawing in and holding water in the skin. But unlike traditional HA, Phyaluronic is naturally resistant to enzymatic breakdown (like hyaluronidase) and also offers inhibitory effects against matrix-degrading enzymes, meaning it lasts longer and protects the skin's extracellular matrix.
So why do some users report a sensation of "tightness" or even concern about dryness after applying a Phyaluronic-based serum, or even a hyaluronic acid?
Let’s clarify the science.
Hydration vs. Tightness: A Common Misinterpretation
Phyaluronic® and HA work by forming a water-rich layer on or just beneath the skin’s surface. High molecular weight versions form a lightweight, gel-like film that binds water and gives an instant plumping and firming effect. This firming can feel like skin "tightness," but it's a biomechanical effect, not a sign of dryness.
Clinical research confirms this phenomenon:
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A 2021 study showed that topical HA improves skin hydration and elasticity, but also led to subjective sensations of increased tightness, without any evidence of dehydration (Verdier-Sévrain et al., 2007).
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Studies using corneometry and Raman spectroscopy demonstrate that even when users report tightness, the skin is actually more hydrated, not less (Pavicic et al., 2011).
Why Application Technique Matters
In low-humidity environments, all humectants (including HA and Phyaluronic) can draw water not from the air, but from deeper within the skin, leading to net moisture loss if not sealed in. This is why dermatologists and cosmetic scientists recommend:
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Applying Phyaluronic to damp skin (ideally post-cleansing)
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Following immediately with a moisturizer or occlusive
Think of this as creating a hydration sandwich: water drawn in, sealed with emollients, and retained where it belongs.
All three of our moisturizers—Renew Night Cream, Light Day Cream, and Nourish—contain different types of occlusive ingredients to help seal in hydration and support skin comfort and barrier function. These products are designed to layer beautifully over Phyaluronic, completing the routine for optimal skin health.
Matt Finish vs. Dewy Finish
Some users may also associate a matte, smooth finish with dryness, especially if accustomed to oil-based products. But this is a finish preference, not a hydration issue. For those desiring a dewier glow, we recommend layering a nourishing facial oil over Phyaluronic—and yes, we’re developing one!
Added Benefits Unique to Phyaluronic
Unlike standard HA, Phyaluronic:
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Resists breakdown by hyaluronidase enzymes
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Helps inhibit collagen- and elastin-degrading enzymes
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Is extracted from renewable, marine-cultivated green seaweed
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Carries sulfate and rhamnose groups with added anti-inflammatory effects
This makes it a next-generation molecule that not only hydrates but protects the skin's structural integrity.
Conclusion
If you're feeling that "tight" sensation after using a Phyaluronic serum, it's very likely a sign of your skin becoming firmer and more hydrated—not drier. By applying it correctly and following with a good moisturizer, you can harness its benefits fully. It’s a smart, sustainable evolution of HA technology, offering comfort, performance, and protection—without compromise.
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