Unfortunately, saliva might wash it away since the gel doesn’t harden on the teeth to keep it in place. Where most pens hover around a 3% hydrogen peroxide concentration, Zoom’s is 5.25%.

Philips Zoom is the only whitening pen we found that matches the effects of other treatments without the addition of an LED light, largely thanks to its peroxide concentration. They typically use lower concentrations of peroxide and there’s nothing to hold the gel on your teeth, so there’s a chance your saliva could wash it away before it takes full effect. Overall, whitening pens aren’t as effective as strips and trays.

If a pen doesn’t brighten your smile, it’s a poor investment. But at the top of the list will always be effectiveness. There are plenty of features you might want in a whitening pen: vegan, gluten-free, great flavor, etc. However, not every aspect of it is ideal. Philips Zoom Whitening Pen is an incredible product, packing a bigger punch than most other whitening pens. Pros & Cons of Philips Zoom Whitening Pen Plus, it’s easy to find since Philips products are sold at most pharmacies and superstores. This puts it on par with whitening strips and trays. While most whitening pens only brighten the smile by two or three shades, the Philips Zoom Whitening Pen can deliver up to a five-shade difference. You can use it twice a day for up to three weeks at a time, depending on your level of tooth sensitivity. However, it has one of the highest peroxide concentrations of any pen on the market, so many customers use it as their full whitening treatment. It was originally conceived of as a way to maintain whiteness in between professional Philips treatments. But after seeing so much success with doctor-directed treatment, they decided to take their products to the masses, and the Philips Zoom Whitening Pen was born. In fact, their Zoom line was originally just for dental offices. Philips is a big name in the dental industry - both for at-home products and in-office treatments.

Philips zoom whitening review