Kelpi is a UK-based, B Corp certified sustainable materials innovation company that has developed a revolutionary patented bio‑based coating derived from seaweed and natural plant oils. Designed for application on paper, card, and fibre-based substrates, the coating delivers outstanding barrier performance that can match, or in some cases exceed, conventional plastics. This makes it well suited to both liquid and powder formats requiring an extended shelf life, including food, drink, personal care, and home care applications. After six years of dedicated research and development, Kelpi’s technology is now at scale, with the company soon to launch a certified recyclable and biodegradable coating for a paper-based sachet for a home care application. Kelpi partners with SMEs, FMCG brands, and globally established packaging manufacturers to support the transition away from fossil fuel–based plastic packaging towards more sustainable alternatives.