"DEN-do", a dentist-developed device that electrifies commercial toothbrushes in 3 seconds, launches in 9 Loft stores with a new package

HAM Corporation, led by dentist Toru Kitamura, has launched "DEN-do", a next-generation attachment that upgrades ordinary toothbrushes into professional sonic vibrating toothbrushes. With a highly visible new light-green package, it is available from May 2026 at 9 Loft stores across Japan, including Ginza and Shibuya. Eliminating the need for expensive dedicated brush heads, it features professional-grade vibrations up to 38,000 times per minute, IPX7 waterproofing, and weighs only 45g. Priced at 8,600 yen, the product has gained massive popularity through crowdfunding and SNS, and the company is currently seeking new retail partners.