Purple Colour-Correcting Teeth Whitening Pen

This one works on colour theory rather than bleaching. Purple sits opposite yellow on the colour wheel, so a thin purple film over the teeth cancels yellow tones the same way purple shampoo does for blonde hair. The effect is immediate and it washes off, which makes it useful right before you go out rather than as a long-term treatment.

There's no peroxide in it, so it won't cause the sensitivity that bleaching gels can.

How to use

Brush and dry your teeth. Twist the base until gel appears on the brush, paint a thin layer across the front of your teeth, smile for about 30 seconds to let it set, then rinse lightly or leave it. Use once a day as needed.

What you get

One purple colour-correcting gel pen. Peroxide-free.

Good to know

This is a cosmetic corrector, not a whitener. It neutralises the look of yellow tones on the surface for a few hours, it does not lighten the actual colour of your teeth and the effect does not build up over time. Results vary and it will not change crowns, veneers or fillings. Not for under-16s. Stop if you get any irritation. If you want lasting change, ask your dentist about proper whitening.