株式会社ミニマム【公式】

Minimum Corporation is a Japanese company based in Tokyo, with its head office in Shinagawa and a factory in Ota. It develops and sells Hapica electric toothbrushes, designed to support everyday brushing and gum care. The company describes Hapica as a toothbrush developed with gum disease prevention in mind. Its brush produces 7,000 fine tapping vibrations per minute to help clean teeth and massage the gums, and features a compact, ultra-thin head for reaching around the mouth. Minimum also highlights Japanese manufacturing, high-quality materials across the product’s components, and clinical testing at Nippon Dental University.

Its product range includes character-themed toothbrushes and accessories. A featured limited-quantity Sanrio Characters collection pairs Hapica toothbrushes with acrylic mirror charms, with designs featuring Hello Kitty, Cinnamoroll, Kuromi, and My Melody. These sets are offered at Don Quijote, and the company provides a product catalogue and official online shop for customers exploring its range. Minimum’s website also offers product-use guidance and contact details for customer enquiries and product advice.