Borussia Dortmund have said they will speak to Pierre-Emerick Aubameyang after he appeared to promote personal sponsor Nike with his hair during Saturday's win over Bayer Leverkusen.
Aubameyang's hair featured what appeared to be a pink Nike "Swoosh" during the 6-2 victory, in which the Gabon striker scored his 20th and 21st goals of the season.
Puma is a Dortmund shareholder and provides the team's kits, and BVB sporting director Michael Zorc said he did not wish to see a repeat.
"This will certainly be from his personal sponsor, if my interpretation is correct," Zorc said on Sky. "This will hopefully be a one-off occasion. We'll certainly address it in talks with him."
Dortmund have yet to fine Aubameyang for the incident and it remains unclear whether he will face action.
The striker's brace took him two goals clear off Bayern Munich attacker Robert Lewandowski in the race for the Torjagerkanone -- the prize for the Bundesliga top scorer at the end of the season.
Aubameyang has now also surpassed Lewandowski in Dortmund's all-time goal scorer list. He has now struck 75 goals in 118 Bundesliga matches for BVB, while the Poland international had netted 74 in 131 matches between 2010 and 2014.