Toni Braxton attends a ceremony honoring Kenny "Babyface" Edmonds with the 2508th Star on the Hollywood Walk of Fame on October 10, 2013 in Hollywood.

Toni Braxton attends a ceremony honoring Kenny “Babyface” Edmonds with the 2508th Star on the Hollywood Walk of Fame on October 10, 2013 in Hollywood.

*Their chart drought is officially over.

R&B staples Toni Braxton and Babyface each end lengthy absences from the top of Billboard’s Nielsen BDS-based Adult R&B radio airplay chart, as their duet “Hurt You” moves from No. 2 to No. 1 this week.

The song is Braxton’s first chart-topper since “Just Be a Man About It” led for two weeks in 2000, while Babyface hadn’t reached the summit since “Every Time I Close My Eyes” resided at the apex for two weeks in 1997. “Hurt” is Braxton’s seventh No. 1 on the ranking and Babyface’s fifth.

“Hurt You” is the lead single from Braxton and Babyface’s upcoming duets album “Love, Marriage & Divorce,” due Feb. 4 on Motown/Island Def Jam. The set was originally slated for a Nov. 25 release, but was postponed to more closely align with Valentine’s Day.

“Hurt You” halts the 17-week reign of Robin Thicke’s “Blurred Lines,” featuring T.I. and Pharrell. In the Adult R&B chart’s 20-year history, only two songs have led longer: Jill Scott’s “So in Love,” featuring Anthony Hamilton (2011), and Maxwell’s “Fortunate” (1999), each for 18 weeks. Miguel’s “Adorn” (2012-13) and Kenny Lattimore’s “For You” (1997) also each spent 17 weeks at No. 1.