Cheek kissing departing. It is uncommon between strangers of any sex, and it may be considered offensive otherwise. It is standard for children and parents, children and grandparents etc., and in its "formal" form it will be two kisses, one on each cheek. It may be a standard formal form of greeting in special events such as weddings. However, in Portugal and Spain, usually, women kiss both men and women, and men only kiss women (so, 2 men rarely kiss). In Portuguese families men rarely kiss men (except between brothers or father and son) , the handshake is the most common salutation
Cheek kissing between them. However, men kissing may occur in Spain as well particularly when congratulating close friends or relatives. Cheek to cheek and the kiss in the air are also very popular. Hugging is common between men and men and women and women; when the other is from the opposite sex, a kiss may be added. In Italy (especially in the South or the Center) it is common for men to kiss men, especially relatives or friends. In Spain, it is very common to kiss both cheeks (double kiss), man-woman and woman-woman only. In most South European countries, kissing is initiated