"White Light" was supposed to promote Amuro's eighth studio album Play (2007), but it was scrapped from the final track list.

A music video was filmed by Masashi Muto and features Amuro in "romantic world", as noted by the singer, and was visually inspired by the Christmas season.

Following the commercial success of Queen of Hip-Pop (2005), Amuro began working on new music with previous collaborators T.Kura, Michico, and Nao'ymt for her eighth studio album, Play (2007).

[4] Amuro confirmed this on her website in early October, announcing that "Violet Sauce" would serve as the film's theme song in Japan and would initially be released as a single.

[a] "White Light" was first announced in early October 2005, a month after "Violet Sauce" was confirmed, and both songs were planned by Avex Trax to be the first single to Play.

[14] When Amuro's album Play was announced, "White Light" was not included on the track list, but a remixed version of "Violet Sauce" titled Spicy was.

"White Light" and "Violet Sauce" debuted at number seven on the Oricon Singles Chart and sold 31,325 units in their first week.

[21][22] The music video to “White Light” was directed by Masashi Muto,[23] and showcases Amuro in a “romantic world” that is inspired by Christmas.

[24][14] To promote the song, “White Light” was used as a commercial theme for the Japanese ringtone service Dwango Iromelo Mix.

[25] Amuro’s song “Nobody” uses similar composition and lyrics from “White Light”, which was also composed, produced and written by Nao’ymt, and was added as a B-side to “Baby Don’t Cry”.

[30] CD / digital / streaming formats[8] Credits adapted from the liner notes of "White Light"/"Violet Sauce".