Colgate-Palmolive has rolled out new Colgate Sensitive Pro-Relief in the UK, billed as the first toothpaste of its kind to make use of Pro-Argin—a new technology that has been clinically proven to deliver instant and lasting relief against tooth sensitivity. Pro-Argin technology uses arginine, an amino acid which effectively plugs the channels which lead to sensitive tooth nerves. While other sensitive toothpastes primarily numb sensitivity pain, Colgate Sensitive Pro-Relief blocks the transm...