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Get instant answers about Marine Hyaluronics
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Deciem's HA-alternative play โ a 23% active concentration of marine-derived hydrators built around three botanical/microbial standouts: algae extract, Pseudoalteromonas ferment extract (a deep-sea bacterium ferment), and Ahnfeltia concinna (Hawaiian red algae). The pitch is that these compounds attract and bind water like hyaluronic acid does, but at lower molecular weight and lighter feel โ so combo and oily skin types who find HA tacky get a similar plumping effect without the sticky finish. The ingredient deck also packs a near-NMF amino acid profile (glycine, alanine, serine, valine, proline, etc.) plus PCA and sodium lactate โ basically the same humectant cocktail your stratum corneum manufactures, redelivered topically. Pairs naturally with the brand's own Hyaluronic Acid 2% + B5 (use Marine in AM, HA at night) or stands alone for sensitivity-tier skin that finds HA serums too occlusive. The watery vehicle layers under everything; the absence of fragrance and silicones keeps the irritation profile low.
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Marine Hyaluronics by The Ordinary is formulated for all, oily, combination, normal, sensitive skin. Deciem's HA-alternative play โ a 23% active concentration of marine-derived hydrators built around three botanical/microbial standouts: algae extract, Pseudoalteromonas ferment extract (a deep-sea bacterium ferment), and Ahnfeltia concinna (Hawaiian red algae). The pitch is that these compounds attract and bind water like hyaluronic acid does, but at lower molecular weight and lighter feel โ so combo and oily skin types who find HA tacky get a similar plumping effect without the sticky finish. The ingredient deck also packs a near-NMF amino acid profile (glycine, alanine, serine, valine, proline, etc.) plus PCA and sodium lactate โ basically the same humectant cocktail your stratum corneum manufactures, redelivered topically. Pairs naturally with the brand's own Hyaluronic Acid 2% + B5 (use Marine in AM, HA at night) or stands alone for sensitivity-tier skin that finds HA serums too occlusive. The watery vehicle layers under everything; the absence of fragrance and silicones keeps the irritation profile low.
The key active ingredients in Marine Hyaluronics are Glycerin, Hyaluronic Acid. It's known for: Lighter than traditional HA โ combo/oily skin gets the plump without the post-application tack and 23% active marine hydrators + amino acid NMF profile = mechanism-grade barrier support.
Yes, Marine Hyaluronics targets dryness, dullness. Lighter than traditional HA โ combo/oily skin gets the plump without the post-application tack
Marine Hyaluronics retails for around $15, which places it in the budget range for serums. Check the "Where to Buy" section above for current retailer prices.
The main drawbacks to be aware of: Hydration depth is shallower than a true low-MW HA โ very dry skin still needs an HA or ceramide partner; Salicylic acid + sodium salicylate trace amounts are preservative-tier but worth flagging for true salicylate intolerance; Watery vehicle drips if over-applied โ 3-4 drops per zone is the limit.
A suggested daily routine featuring this product, with complementary picks.
Glycolipid Cream Cleanser
The Ordinary ยท cleanser
Glycolic Acid 7% Toning Solution
The Ordinary ยท toner
Marine Hyaluronics
The Ordinary ยท serum
Soothing & Barrier Support Serum
The Ordinary ยท serum
100% Plant-Derived Squalane
The Ordinary ยท oil
Anthelios UVMune 400 Invisible Fluid SPF50+
La Roche-Posay ยท sunscreen
100% Plant-Derived Squalane
The Ordinary ยท oil