Microalgae: revolutionizing skin repair and enhancement.

Microalgae are attracting growing interest in the cosmetics industry due to their rich content of antioxidants, vitamins, and polyunsaturated fatty acids, which offer anti-aging, anti-inflammatory, and photoprotective benefits. Current research primarily focuses on individual species and isolated bioactive compounds. Several challenges persist, including scalability, cost-effective production, low biomass yields, and regulatory constraints. From an environmental perspective, microalgae can be sustainably cultivated on non-arable land, using recycled water and capturing CO₂, thus reducing carbon emissions. Technological advancements, such as photobioreactor systems, have further enhanced resource efficiency and minimized ecological impact. This review explores multiple microalgal species and their combined bioactive potential for innovative cosmetic formulations. By integrating green extraction techniques and circular economy principles, microalgae-based products can meet rising consumer demand for clean beauty while promoting sustainability. With increasing clinical evidence and ongoing technological progress, microalgae hold significant promise for driving eco-friendly innovation in the cosmetics sector.