Full Moon is the fourth extended play by South Korean girl group EXID.

[5][6][7] On 28 October, it was revealed that the physical copy of the album would include a 100-page booklet, a puzzle photo card in both sides, a group poster and a paper stand.

[9] On 1 November, a highlight medley was posted on the group's official YouTube channel, showing a preview of each song.

[10] On the same day, the agency revealed that member Solji would not participate in the EP's promotions, but assured that she did take part in both recording and jacket photos.

[11] That day it was also revealed that the group's lead single "DDD" was deemed unfit for broadcast by KBS, due to the use of swearing and vulgar language/slang.

The group performed "DDD" for the first time before the album's release on 4 November 2017, on the 2017 Dream Concert in Pyeongchang.