Harnessing the Power of Caulerpa racemosa's Nanocellulose for Skincare Innovation

As the skincare industry continues its exponential growth, the spotlight is increasingly focused on safe and natural ingredients. From moisturizer to facial masks, consumers are seeking alternatives to harsh synthetic compounds. A recent study conducted by researchers at Hasanuddin University in Makassar, Indonesia, shines a light on the promising potential of nanocellulose derived from the green algae Caulerpa racemosa as a natural humectant.

Humectants are vital in cosmetics and skincare, working to attract and retain moisture within the skin. Traditional synthetic options such as glycerol and hyaluronic acid are widely used but often raise concerns regarding their long-term safety and environmental impact. Therefore, there is an urgent demand for natural substitutes that can provide similar benefits without the associated risks.

Professor Indah Raya, leading the research team at Hasanuddin University, explained the motivation behind exploring this green algae-based ingredient: "Due to their unique structure, nanocellulose offers remarkable biocompatibility and excellent water absorption capabilities. Given that Caulerpa racemosa is abundant in Indonesian waters, we aimed to evaluate its efficacy as a sustainable humectant for skincare products.”

The research team meticulously collected fresh seaweed from the clear waters of Takalar Aquaculture village in South Sulawesi. After extracting nanocellulose from the raw material, the team conducted detailed analyses to assess the structure, particle size, and moisture-retention properties of the substance. Their findings revealed a presence of functional groups indicative of cellulose, confirming its ability to bind effectively with water molecules.

One of the standout features of this nanocellulose is its nanoscale structure, which facilitates deeper penetration into the skin and uniform distribution. Comparatively, it demonstrated superior water-binding capabilities, allowing for prolonged moisture retention. This translates into a safer option for skincare formulations with lower risks of irritation than their synthetic counterparts.

With potential applications across a range of products—including moisturizers, anti-aging creams, and facial masks—the benefits of using Caulerpa racemosa nanocellulose extend beyond consumer safety. Being biodegradable and renewable, it aligns seamlessly with sustainable practices. The adoption of this ingredient would also promote the blue economy concept, which encourages the stewardship and sustainable use of marine resources.

This study aligns with the United Nations' Sustainable Development Goal 14, aimed at conserving life below water while fostering sustainable use. As Dr. Raya emphasizes,