It started, as these things often do, with a mirror and a mug of coffee. One day the shine looked a little duller, the edges a little yellow. We tried ignoring it. We tried “I’ll cut back tomorrow.” Then came the strips, the blue lights, the gritty pastes that made our teeth zing.

Somewhere between the this burns phase and the maybe whitening just isn’t for me spiral, we decided there had to be a gentler way.

That’s how Risu was born.

We wanted whitening that lived inside your normal brush—no trays, no timers, no sting. So we borrowed a page from a simple ritual: rice water.

Our paste pairs rice-water extract with ultra-fine polishers to lift everyday coffee/tea stains and smooth the tooth surface so light reflects cleanly.

No harsh bleach. No “over-whitened” look. Just a steady, natural brightening you notice in the mirror before anyone says a word.

Inside the tube is only what earns its place: a low-abrasion, enamel-safe base; gentle polishers that don’t scratch; fresh, not fake, mint. It’s made to be used twice a day, not once in a while—because consistency beats intensity every time.

Day by day, the film goes, the slip returns, and your smile looks a little clearer—without the wince, without the drama. Not magic. Just the right formula doing its job while you do yours.

Our goal is simple: make whitening part of brushing, not a separate chore. Save your enamel, save your routine, and give you back that clean, bright, glass-smooth feel.

We make the paste.
You make the smile.

Cosmetic surface-stain reduction; individual results may vary. Not a substitute for professional dental care.