This word is mainly in use in Japan and South Korea and is rarely or never used by native English speakers.
From Japanese スキンシップ (sukinshippu) or Korean 스킨십 (seukinsip), from English skin + -ship, desiged to rhyme with kinship.
"skinship." YourDictionary, n.d. Web. 16 August 2018. <http://www.yourdictionary.com/skinship>.
skinship. (n.d.). Retrieved August 16th, 2018, from http://www.yourdictionary.com/skinship