"We will not start chasing our players and ask them whether their wives are barbers," a Union Berlin spokesperson said.
The German Hairdresser Association has asked the German Football Association (DFB) why footballers have taken to the pitch with fresh haircuts.
Bayer Leverkusen had to come from behind to rescue a 1-1 draw against visitors Werder Bremen on Saturday.
Borussia Dortmund's new head coach Edin Terzic enjoyed a winning debut as they narrowly beat Werder Bremen 2-1 away on Tuesday.
RB Leipzig provisionally moved top of the Bundesliga as a 2-0 victory over Werder Bremen on Saturday lifted them a point ahead of Bayern Munich.
Silas Wamangituka scored both goals as VfB Stuttgart edged a 2-1 away win to Werder Bremen.
Bayern Munich saw their winning run come to an end following a come from behind draw against Werder Bremen on Saturday.
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