How do you tell if this is a wig or not?

The only way to tell the difference between a natural full hairline shown vs a hairpiece is to look at the hairline. In this picture, the hairline is covered by the hair, a common styling technique used in hair systems. Some men do it with their natural hair that is full and curly, so here, it is impossible to tell. Some men use an expensive lace system as shown earlier this month on my Donald Trump post here: https://baldingblog.com/does-donald-trump-have-an-expenisve-wig/