I am collaborating with HiSmile for this post, which is an Australian teeth whitening company (and they ship worldwide!). All of their products are made with the safest ingredients available on the market, so no harm will ever be done to your teeth.
Want to know the best thing about the #HiSmileExperience? How easy it it!! It arrives at your doorstep in a kit containing a mouth tray, an LED light, and three tubes of whitening gel. For six days straight, all you do is fill the tray with a half tube of gel every night (1/4 on the top + 1/4 on the bottom), attach it to the LED light, and press go! The light will automatically turn off after 10 minutes and then you're all done!
Give it a try and let me know what you think!!