One of the most prominent features of a Hollywood smile is the whiteness of the teeth. The teeth are often bleached or treated to achieve a bright, even white shade, which contrasts with the darker colors of the gums and lips.
Perfect Alignment: The teeth are uniformly straight, with no crowding, gaps, or irregularities. This is achieved through orthodontics (braces or aligners) or cosmetic dental procedures.
Symmetry: The teeth are evenly sized and proportionate to each other. This includes a balance between the upper and lower sets of teeth, as well as the teeth's relation to the lips and overall face.
Natural-looking: Although the teeth may be perfectly white and aligned, the Hollywood smile also maintains a natural look. It avoids looking overly "perfect" in a way that could appear artificial. For example, the gums should not be too prominent, and the teeth shouldn't appear too large or out of place with the person’s natural feature