When you brush your teeth, do you ever stop to consider if your toothpaste is actually doing what it claims to be capable of on the tube? Teeth whitening toothpastes are as popular as ever, with influencers pushing products that claim to enhance your smile, look further and the science may be less than solid.In this week’s Which? Investigates, we dig into those claims, ask whether these products are safe, and if we can be confident they work as promised?Are toothpaste tubes recycleable? read more here & sign up to our free weekly newsletters.