The most common cultivar of pumpkin grown specifically for its seeds is the Styrian pumpkin, which yields the small, smooth green seeds sold in grocery stores. Styrian pumpkin seeds are ideal for eating because they are rich in oil and naturally hull-less.
Carbamide peroxide (also known as urea peroxide) is the most popular over-the-counter and professional bleaching agent used for teeth whitening. The main and active ingredient in carbamide peroxide is hydrogen peroxide.arbamide peroxide (also known as urea peroxide) is the most popular over-the-counter and professional bleaching agent used for teeth whitening. The main and active ingredient in carbamide peroxide is hydrogen peroxide.
Hydrogen Peroxide vs. Carbamide Peroxide. The bleach preference for in-office whitening, where time is limited, is powerful and fast-acting hydrogen peroxide. When used in bleaching teeth, hydrogen peroxide concentrations range from approximately nine percent to 40 percent.