Back to the Future actors had special makeup to make them look 30 years older. Let's compare the "30+ years makeup" photos to their current photos, when they are actually 30 years older.
Crispin Glover - George McFly Young / Film, 30 + years / 30 years later
1
Thomas F. Wilson - Biff Tannen Young / Film, 30 + years / 30 years later
2
Michael J. Fox - Marty McFly Young / Film, 30 + years / 30 years later
3
Lea Thompson - Lorraine Baines Young / Film, 30 + years / 30 years later