In North America and Europe, a firm handshake is an appropriate form of greeting. In Asia and the Middle East, where hand shaking is still relatively new, the customary grip is gentler; a too-hearty grip could be interpreted as aggressive. In Islamic countries, offering your hand to a woman is highly offensive. At the other extreme, it’s said that you can never shake hands too much in France, whre women shake hands as freely and as often as men.
Here’s when it’s okay—and not—to use more personal greetings:
The Peck on the Cheek: Men and women should refrain from kissing in business situations, since even an innocent peck might be misconstrued. The exception is when people know each other quite well, especially when they greet each other at a quasi-social event like a convention or a business lunch.
The Air Kiss: This cheek-touch with pursed lips that began as a way of avoiding smudged makeup can come across as insincere. Stick with the handshake.