Colgate is an OG oral hygiene brand so expectations were high and optimistic, here. The max white overnight teeth whitening pen works by aiming to reverse discolouration caused by food and drinks.

Gem Teeth Whitening Pen PAP is formulated with PAP ... I was initially very sceptical of this £24 Colgate toothpaste. It's almost £10 more expensive than most of Colgate’s other whitening ...