Seaweed has shaped how people care for their bodies for thousands of years.

Cracked knuckles. Dry scalps. Skin that screams with every wash. For thousands of years, people turned to seaweed. And we still do.

From ancient philosophers writing about its uses, to Indigenous knowledge here in Canada, to modern hospital dressings, seaweed has always been valued for its ability to comfort, hydrate, and protect.

At 7 Fathoms, our Hair, Scalp & Body Spray continues this story. It delivers pure seaweed care in one of the simplest and most functional forms available today.

A Tradition of Care

Over 2,000 years ago, Theophrastus — Aristotle’s student and the “Father of Botany” — wrote about phycos (seaweed) in his Enquiry into Plants. He described how people used seaweed to soothe swelling and enrich their fields.

But knowledge of seaweed’s value has never belonged to one culture. Around the world, communities have turned to the ocean for nourishment and healing. Here in Canada, Indigenous peoples have long used seaweed as food and medicine, recognizing its ability to sustain and restore.

Seaweed in Hospitals

In 1881, British chemist Edward C.C. Stanford extracted alginic acid from brown seaweeds such as Laminaria. By the 1960s, this discovery transformed wound care. Alginate dressings made from seaweed are still used in hospitals today.

These dressings work by absorbing fluid and turning into a soothing gel that hydrates and protects the wound surface. It’s a principle of care rooted in seaweed’s natural properties — protection, hydration, and support for the body’s recovery.

The same gel-like hydration that soothes burn wounds in hospitals? That’s what’s in every mist of our spray — only gentler, and daily.

Carrying the Principle Forward

At 7 Fathoms, we see our Hair, Scalp & Body Spray as a continuation of this principle. Instead of isolating or fractionating single compounds, we produce whole extracts of Laminaria digitata, preserving the full spectrum of seaweed bioactives — fucoidan, polyphenols, beta-glucans, and more.

With 90% Laminaria extract, no oils, and only what’s needed to stabilize, the spray is rare in skincare. Few products deliver seaweed extract in such a functional form. Oil-free and versatile, it’s as close as you’ll find to pure seaweed care in a bottle.

Daily Use, Functional Results

Our customers use the spray for:

• Dry or sensitive scalps in need of hydration and comfort.
  

• A refreshing skin hydration spray after showering, before fully drying off.

• Targeted areas where skin feels stressed, irritated, or dry.
  

• A light, oil-free option for travel or work.

Every spray is a reminder that the same resilience that made seaweed essential in hospital wound dressings can also be part of daily barrier care — simple, direct, and functional.

Distilled into a Daily Routine

From Theophrastus’ scrolls to Indigenous medicine along the Canadian coast to hospital burn units, seaweed has always been linked with care. Our Hair, Scalp & Body Spray carries this legacy forward in one of the purest ways possible: 90% Laminaria digitata extract, oil-free, whole, and functional.

This isn’t just skincare. It’s seaweed care — distilled into a daily routine that honours its past, and 7 Fathoms makes it available to you today.

Ready for care that goes deeper? Try pure seaweed care yourself — the kind your skin already understands.