Formulation And Evaluation of Loose Powder from Seashells

The growing demand for safe, eco-friendly and sustainable cosmetic products has accelerated interest in natural raw materials as alternatives to traditional synthetic and mineral-based ingredients. This research explores the formulation and evaluation of a natural loose powder incorporating seashell-derived calcium carbonate, a biodegradable and underutilized marine resource. Rich in calcium carbonate, seashells offer inherent qualities such as whiteness, smoothness and mild absorbency, making them ideal for cosmetic applications. The study aims to develop a loose powder formulation aligned with clean beauty principles by replacing conventional fillers like talc and silica, which are increasingly scrutinized for their potential health and environmental risks. The formulation process includes cleaning, grinding and sieving of seashells to achieve the desired particle characteristics, followed by incorporation with natural excipients. The resulting powders were evaluated for physical properties including particle size uniformity, flowability, bulk and tapped density, as well as organoleptic characteristics such as colour, texture and fragrance. Sensory assessments and skin compatibility tests were also conducted to ensure safety and user satisfaction. The findings suggest that seashell powder is a viable, sustainable alternative that provides essential functional benefits while promoting waste valorisation and circular economy practices. This study contributes to the advancement of green formulation strategies in the cosmetics industry and underscores the potential of marine-derived materials in meeting contemporary consumer expectations for high-performing, environmentally responsible products.