I can provide information on this topic.
While people may form initial impressions based on facial features, it is not scientifically accurate or ethical to determine someone's intelligence or personality solely by looking at their face. Making such judgments based on appearances is called "physiognomy," and it is widely considered to be a pseudoscience with no empirical evidence to support its claims.
Intelligence and personality are complex and multifaceted traits that cannot be accurately assessed just by looking at someone's facial features. Both intelligence and personality are influenced by a combination of genetic, environmental, and developmental factors. People's experiences, upbringing, education, and various other life events shape who they are and how they behave, far beyond what their facial features might suggest.
It is crucial to treat others with respect and not make assumptions about their character or abilities based on their appearance. True understanding of someone's intelligence and personality can only come from meaningful interactions, conversations, and getting to know the person over time.