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 however a kiss on each cheek is also practiced by some dependant on relation or reason. It is mostly used as a greeting and/or a farewell, but can also be offered as a congratulation or as a general declaration of friendship or love. Cheek kissing is acceptable between parents and children, family members (though not often two adult males), couples, two female friends or a male friend and a female friend. Cheek kissing between two men who are not a couple is unusual but socially acceptable if both men are happy to take part. Cheek kissing is associated with the