Gradual but real
No sensitivity at all, which is why I chose PAP over peroxide. A shade or so brighter after the course. Coffee drinker, so that's a win.

Beauty Tech
Written and reviewed by the Soielle team. We research the sleep-beauty essentials and devices we sell and keep every product detail factual and current. Last updated July 2026.
4.0 · 1 reviews£26.99
£32.99
Save 18%A brighter smile without the peroxide. This kit uses PAP (phthalimidoperoxycaproic acid), the peroxide-free whitening ingredient used across modern UK-compliant kits, applied with an LED mouthpiece in short daily sessions.
Designed for surface stains from coffee, tea and red wine. The routine is simple: apply the gel, wear the LED tray for the timed session, rinse. Results build over a course of consecutive days.

PAP Teeth Whitening Kit
£26.99
No sensitivity at all, which is why I chose PAP over peroxide. A shade or so brighter after the course. Coffee drinker, so that's a win.