How Seaweed Thrives Without Fresh Water, Soil or Fertiliser

Seaweed is one of nature’s greatest resources, it grows without the need for fresh water, soil, or fertiliser. It is naturally nutrient-rich, fast-growing, and available year-round, making it one of the most sustainable and environmentally responsible ingredients in the world.

Self-sustaining 

Unlike land-based plants, seaweed is entirely self-sufficient. It absorbs everything it needs to grow directly from the ocean - minerals, nutrients and trace elements are taken from seawater as it moves with the tides. With no reliance on soil, irrigation or fertilisers, seaweed places virtually no strain on natural resources, it's fast growing and also regenerates quickly throughout the year.

Environmentally friendly

Seaweed plays a vital role in supporting the health of our planet. As one of nature’s most efficient oxygen producers, it generates up to 70% more oxygen than land plants while absorbing carbon more effectively than trees. Beyond this, seaweed helps to naturally restore balance within marine environments by absorbing excess nutrients from the water, improving overall water quality, and acting as a protective buffer along coastlines. 

Sustainably harvested from pure Hebridean water

At ishga, our Hebridean seaweed comes from the pristine waters surrounding the Isle of Lewis. These unpolluted seas provide an ideal environment for seaweed rich in antioxidants, vitamins and bioactive minerals to flourish. Our seaweed harvesting practices are certified by the Biodynamic Association, ensuring they meet the highest standards for sustainability, biodiversity and natural regeneration. This certification reflects our commitment to protecting marine life and preserving the ocean.

Fresh seaweed, lower impact

We hand-harvest our seaweed weekly only taking what we need for the fresh batches of skincare, this ensures nothing is taken unnecessarily. Unlike many ingredients that are dried, stored or transported long distances, we use our seaweed fresh. It is never dried or stockpiled, which significantly reduces energy consumption. This process not only lowers our environmental footprint but also helps preserve the seaweed’s natural potency, delivering maximum benefits to your skin.

Seaweed’s ability to thrive without fresh water, soil or fertiliser makes it a powerful symbol of sustainable skincare. From sea to skin, every step is considered as we create organic, results-driven skincare that works in harmony with nature.