18 years old & looking to get teeth whitened, is B1 achievable or is it too much to ask for? (Photo)

The first route that I would recommend is to get routinely professional dental cleanings to avoid plaque, stains and build up accumulation. You need to improve your personal routine at home by using an electric toothbrush and make sure you also add flossing to this routine, its very important and you will notice the difference. Once you can establish this routine, you can explore different technique to brighten your smile, wether in-office or at home treatments, can give you great results, keep in mind that the final shade of the enamel is determined also by the second layer of your teeth, which is called dentine. This hard tissue is very different from patient to patient, and just like any other part of our body, it has different thickness and colors or tones of colors, so it does not matter how much you put on your teeth, if you have a darker dentine, your teeth will always tend to be on the darker, grayish side. People tend to look always for the brighter and whitest smile, but personally I think that a clean, little light smile is perfect, is very natural-looking, just my personal opinion. But I know that the trend is to go super white now this days, so you will have to make the decision on how bright you want to go. Achieving a B1 can be challenging, especially with the factors mentioned above, but I think you can reach this goal with discipline and a good oral hygiene habit.