Kao Launches Encapsulation Technology for UV Absorber-Free Sunscreen

Kao Launches Encapsulation Technology for UV Absorber-Free Sunscreen

Kao Corporation has introduced a groundbreaking encapsulation technology for its UV absorber-free sunscreen, marking a significant advancement in sun care formulations. This innovative technology utilizes titanium dioxide capsules as a UV-scattering agent, replacing traditional chemical UV absorbers.

The new formulation, will debut in February in Japan in the SPF50 Bioré UV Aqua Rich Watery Hold Cream, offers strong UV protection without leaving a white cast or greasy residue. The encapsulation technology ensures even distribution of the UV-scattering agents in a water-based formulation, providing a light texture and seamless application.

This product does not fall under current regulations in many places making it accessible to a broader market. The effectiveness of the sunscreen is defined by international standards, for example the new formulation will display SPF50/PA+++ in accordance with ISO 24444 (SPF) and ISO 24442 (UVA-PF) offering an equivalent regardless of the type of UV absorbers or scattering agents used.

Sunscreen formulations that opt on physical barriers to shield the skin from the sun use UV-scattering agents like titanium dioxide to reflect UV rays. These agents are generally oleophilic, meaning they disperse effectively in oil-based formulations. However, while oil-based sunscreens provide adequate UV protection, they often leave a greasy texture and a noticeable white cast. In contrast, water-based formulations offer a lighter feel but face challenges in achieving effective UV protection. The UV-scattering agents do not disperse as evenly, and as the water evaporates post-application, gaps can form in the protective layer, reducing their effectiveness.

The encapsulation technology ensures that the UV-scattering agents are evenly distributed in a water-based formulation, providing effective UV protection without leaving a white cast or greasy residue. This means that consumers can enjoy sun protection without compromising on texture or appearance. Additionally, the water-based formulation is more environmentally friendly than oil-based alternatives, as it reduces the risk of water pollution and is easier to wash off, minimizing its impact on aquatic life.

Kao Corporation’s new encapsulation technology is not only innovative but also environmentally friendly. Traditional sunscreens often contain chemical UV filters like oxybenzone, which have been linked to coral bleaching and other environmental hazards. By using titanium dioxide capsules as UV-scattering agents, Kao’s new formulation avoids these harmful chemicals, making it a safer option for marine ecosystems.

Kao Corporation believes there is a global demand for non-chemical UV products and are considering their development. Due to differences in regulations and consumer needs in each country and region, the company will proceed while assessing the possibilities.

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