Meaning
A face with eyes closed in contentment and lips puckered for a kiss, often with blushing cheeks. Compared with the kiss-blowing face it feels quieter and more tender, like a peck on the cheek rather than a dramatic smooch.
It suits sweet goodnights, thank-yous to family and affectionate teasing between partners: “Night night, sleep well 😚” Some people also use it simply as a happy, satisfied face after a nice meal or compliment. As with any kissing emoji, keep it for people who will welcome the closeness.