Brilliant HD – Deluxe Teeth Whitening Kit from Nunutrients is pretty amazing I must admit. The mouth trays are like none that I have used before. Most of the mouth trays that i have used you could only do a slight impression, so even when you have a slight impression on your mouth trays, they still hurt when you have them in. But with Nunutrients mouth trays that are designed with dental grade impression material, you get a full impression of both bottom and top teeth! I will say that when you use the whitening gel, you will want to use a q-tip to apply it, instead of putting it straight into the mouth trays. If you put the whitening gel into the mouth trays, you will always put too much and it will bleach your gums. Now don’t get me wrong, your gums wont stay white. And if you do get it on your gums, it burns. Better just to use the q-tips for application. After using the whitening gel, it also comes with remineralization gel which is used to rehydrate the enamel. Doing this step helps decrease tooth sensitivity and trap in the whiteness. After just one use of the Brilliant HD – Deluxe Teeth Whitening Kit I saw such improvement!! And even more improvement after the second use!! I can’t wait to see how white my teeth are by the end of using this product!! So go get yours today to experience a whiter and better smile!!