1. Palms of the hands: This is a classic example. The palms are smooth and hairless.
2. Soles of the feet: Like the palms, the soles of the feet are naturally hairless.
3. Lips: The lips are delicate and hairless.
However, it's important to note that individual variations do exist. Some people may have very fine, almost invisible hair on their palms, soles, or lips. Also, certain medical conditions or hormonal changes can cause hair growth in areas where it typically doesn't grow.