Kao Corporation has introduced a significant breakthrough in sunscreen technology with the development of titanium dioxide capsules as a UV-scattering agent. This innovation replaces traditional chemical UV absorbers in the formulation, offering a new way to protect the skin from harmful sun rays.
The first product to feature this advanced technology will be the SPF50 Bioré UV Aqua Rich Watery Hold Cream, set to launch in Japan in February next year. Kao has positioned the product as a lightweight sunscreen that delivers strong UV protection without leaving a white cast, making it especially suitable for sensitive skin.
Kao Highlights Encapsulation Technology in Launch of UV Absorber-Free Sunscreen. The breakthrough technology centers on the use of titanium dioxide capsules that help reflect UV rays, a move that eliminates the need for conventional chemical UV filters. These capsules are designed to maintain an even dispersion in water-based formulations, providing a smoother, more uniform application compared to traditional sunscreens that often leave a greasy feel or visible residue.
Jun Kurihara, from Kao’s Skin Care Products Research Laboratory, explained that comparing UV absorber-free sunscreens with traditional UV-absorbing products isn’t straightforward due to the differences in formulation types. “The effectiveness of sunscreens is defined by international standards. For example, this product displays SPF50/PA+++ in accordance with ISO 24444 (SPF) and ISO 24442 (UVA-PF). If the values are the same, the effectiveness is equivalent regardless of the type of UV absorbers or scattering agents used,” he clarified.
The key to the new technology lies in its ability to deliver an even application of UV-scattering agents in water-based formulas. Kao Highlights Encapsulation Technology in Launch of UV Absorber-Free Sunscreen by utilizing capsules that stabilize the scattering agents, which are typically oleophilic and struggle to disperse in water. This new capsule technology helps ensure the sunscreen provides full coverage, offering effective UV protection while avoiding the greasy texture associated with oil-based products.
Kao’s innovation also addresses the growing environmental concerns surrounding chemical UV filters, such as oxybenzone, which are known to damage coral reefs. Kurihara confirmed that since this product uses titanium dioxide capsules rather than chemical UV absorbers, it complies with regulations in regions like Hawaii and Thailand, where certain chemical sunscreens are banned. “Since this product does not use UV absorbers, it does not fall under the current regulations in places like Hawaii and Thailand and can be used,” he said.
The Bioré UV Aqua Rich Watery Hold Cream will feature a water-based formulation with two trillion aqua capsules per use, providing long-lasting hydration without a greasy feel. The product is alcohol-, paraben-, and colorant-free, making it suitable for daily use. Kao also assures that the sunscreen washes off easily with soap or cleanser, making it a convenient option for consumers.
Kao Highlights Encapsulation Technology in Launch of UV Absorber-Free Sunscreen, as the company focuses on expanding its portfolio of non-chemical, environmentally friendly sunscreens. While the initial launch will be in Japan, Kao is exploring the possibility of bringing this innovative product to international markets, recognizing the growing global demand for safer and more sustainable UV protection solutions.
Although the product’s availability outside Japan has not yet been confirmed, Kurihara noted that Kao is carefully considering global expansion. “We believe there is a global demand for non-chemical UV products and are considering their development,” he said. “Due to differences in regulations and consumer needs in each country and region, we will proceed while assessing the possibilities.”
