Not cleaned before whitening, and the hydrogen peroxide bleaches very awkwardly, it penetrates the teeth and whitens inside out. Meaning the whitening is also awkward
They are called intrinsic stains meaning when you bleach they will also brighten a lot more because of fluorosis drinking fluoride water as a child or taking a medication called tetracycline, so it could be tetracycline stains eventually if it’s away
You needed to have some re-mineralization gel right after the treatment, or to take home, you probably also had a high percentage of hydrogen peroxide left on teeth for too long of sessions
If you’re going to post this at least explain WHY it’s patchy so everyone doesn’t think this is how it turns out because everyone doesn’t have demineralization from drinking fluoride as a child or stains from taking tetracycline. These are intrinsic stains meaning within the tooth and when you whiten those spots will whiten more but slowly go away. Don’t bleach right before you’re wedding lol at least allow 2 weeks before to have these white blotches decrease
