GuruNanda Teeth Whitening Pen,(0.06 fl oz)-20 Uses, Pro Formula - Hydrogen Peroxide Whitening Gel Pen, Enamel-Safe, Cruelty-Free, Vegan, Mint Flavor (Pack of 4)

This really a good teeth whitener

Great

Greta product! Definitely worth the price and it lasts a good amount of time! However if you want this product to really work make sure u purchase the pulling oil too. Love the clean ingredients however this won’t make ur teeth white instantly. You will need to take more care and attention to your teeth for a full effect. Overall I give it a 8.5/10

decent

Noticeably brighter teeth after first use. Compact, travel-friendly, and cruelty-free.

Muy buen producto. Funciona como complemento de una buena pasta dental.

Purchased as a review from an Instagramer that purchased for $1.25 at Dollar Tree. Now, I was fine with paying double, $2.50 isn't bad (though hey, Amazon, your video in the photos says same price as dollar tree). Anyways, most pens are a minute or less. This pen? You're supposed to smile wide with lips not touching teeth (puckered, essentially) for 15 minutes. Can you do that? I tried. My husband asked what was wrong with me.Then 30 minutes no drinking or eating. Ok, cool. My husband just thinks I'm being weird. Nooo. The weird came from the white spots it left all over my teeth. 🙄 And no, my teeth weren't bad to begin with.I've seen high remarks on this brand's other products, so I may give some of them a go. As for this pen, it's a NO.

Actually has whitened my teeth. I’ve used it every night and it started to work within a couple of days for me.