Marine Hyaluronics

The Ordinary Marine Hyaluronics is hydration from the sea instead of the lab: a featherlight serum whose marine-derived water reservoirs attract and hold moisture the way hyaluronic acid does — minus the heavier feel. If classic HA serums sit tacky on your skin, this is the alternative.

What it actually does

• Hydrates like hyaluronic acid. The marine ingredients act as lightweight water reservoirs that pull moisture in and keep it there.
• Draws on an unusual ingredient list. Exopolysaccharides from skin-friendly marine bacteria, Hawaiian red algae, glycoproteins from Antarctic sources and micro-filtered blue-green algae, plus several amino acids that support skin health.
• Feels like water. The brand describes the texture as light, built for people who dislike the slip of traditional HA formulas.
• Targets dryness specifically. Dryness is the single concern The Ordinary names for this serum.
• Clean basics. Paraben-free, vegan, cruelty-free, gluten-free, recyclable packaging.

How to use

1. Apply a few drops to the face, morning and evening.
2. Follow with your cream to seal the hydration in.
3. Patch test before first use and apply only to unbroken skin.

Is it right for you?

Questions

Does it actually contain hyaluronic acid?

No — and that's the point. It uses marine-derived ingredients that behave like hyaluronic acid, attracting and holding water, in a texture lighter than most HA serums.

Can I wear it under makeup?

Its light, watery texture is designed to disappear into the skin, so it slots into a morning routine easily — apply it first, let it settle, then continue with your cream and makeup.

How long does delivery take?

Delivery takes 3 to 21 working days, depending on availability. In-stock items arrive at the shorter end of that range; items we order in for you take longer.

How can I pay?

Credit card, debit card, Instapay and mobile wallets — no cash on delivery.

What's the return policy?

Returns are accepted for defective, damaged or expired items only, reported within 1 day of delivery. Once verified, we refund to the original payment method within 15–30 days.