Have you ever wondered how a person can look completely different in just a matter of a few changes and a proper trimming and a neat bath? From being a dirty man to being the one who can befriend anyone. Hygiene is a key factor to the way you look and attract people apart from your sexual appeal. Interactiveness is another point which may attract people and a person should also look approachable.
If you still cannot believe it then try and approach a homeless person and get him to enjoy one day of clean, trimmed and tidy body along with some food to keep him safe and a blanket to keep him warm. The transformation may not make him look like a hero, but that dirty man will make you a clean hearted man instead.