✔️Whitening light devices A whitening agent is directly applied to teeth then a blue LED light is held over them to increase penetration and accelerate results. Like teeth whitening strips, light devices are very effective because of the amount of time the active ingredient makes full contact with your teeth. This store does not have any details about the owner and founder of this website or their name. We got this knowledge from contact details. There are no customer reviews about services like shipping, customer care etc. on their main site. But there is a review about the product. The prices on the site are too good to be true. So we advise you to refrain from buying from this online store. Colgate Optic White’s White Express Teeth Whitening Pen contains hydrogen peroxide and comes with enough gel for 35 treatments. The pen has a narrow applicator brush, which Rebecca Rodriguez, Select’s editorial projects associate, says helps you apply the gel to each individual tooth – she tried the whitening pen when it first launched. The whitening treatment can help whiten your teeth more than two shades in three days when used as directed, according to Colgate. However, to achieve the best results, be sure to follow the seven-day plan detailed on the whitening pen’s packaging.