I didn't read the whole thread because it's very long but I wanted to tell you about my experience. I didn't want to spend a lot of money so I thought Ebay was a good idea... Or maybe it was Amazon, I can't remember. Anyways, I bought the Premium but it turns out that it was pointless the "kit" I bought wasn't a whole kit, it didn't have as many strips as the full kit has. And THAT is why Premium costs more, I spent more money on something that was the exact same as the regular kit. Also, they sent them out of the box to "save me money on shipping" and so, there was no expiration date. I used them, they made no difference, didn't even burn like they did when I bought them the last time but from a store and I couldn't prove they were old because they no doubt lied about the expiration date. Be careful with your money. The ones I bought from the store actually did work though and they worked well. They didn't burn as much as the trays do.

I've been using the Nite White system and love it. You get the dental mouth bleaching trays from your dentist after they make a mold of your teeth. The bleaching gel comes in 10%, 16% and 22%. To help decrease the sensitvity, be sure to use a good floride tooth gel. You can even put the gel in the bleaching trays and wear it for an hour. Helps 100%. The problem that I see with bleaching strips is that they don't really get in all the spaces (especially between teeth) as the gel does.

Jannie, I had my top 6 teeth bonded 18 yrs ago, to correct gaps, etc. Back then they didn't offer the types of teeth bleaching that we have today. My bonding is now dull and not as white as my other teeth, now. I have been using the Night White systen from my dentist for several months (off and on). My bonded teeth did get alittle lighter, probably got rid of the coffee/coke stains. They are still yellower than my other whitened teeth. I want to replace them with porcelin veneers but that will cost abot $5000. I've informed my husband that as soon as one of theses bondings chips or cracks then I will replace them with the veneers (sooner I hope).

Whitening toothpaste can appear to whiten teeth slightly by removing surface stains, such as those caused by drinking coffee or smoking. However, whitening toothpastes can't change the natural color of your teeth or lighten a stain that goes deeper than a tooth's surface. https://www.mayoclinic.org/healthy-lifestyle/adult-health/expert-answers/whitening-toothpaste/faq-20058411 You'll have better and faster results using something like Crest Whitestrips.