Bathing for a Mourner After Thirty Days Before Ge'arah

A mourner after thirty days for his father and mother, before the period of Ge'arah has passed, is he allowed to bathe as usual in hot water?

A mourner for his father and mother during the twelve months is permitted to bathe as usual in hot water and soap.

Regarding the custom not to bathe within thirty days, the Or Zarua wrote that it is due to the concern that one might comb their hair after bathing. (We permit combing as stated in Shulchan Aruch, Siman 390.) The Maharshal wrote that the reason is due to a decree lest one might get a haircut afterward, as it was customary to get a haircut after bathing. In Pitchei Teshuva, SK 2, it is written: "Indeed, I find it difficult to understand this reason of the Maharshal, because if so, why did they not prohibit bathing for one's father and mother even after thirty days, as long as shaving is forbidden, that is, until friends rebuke him, as stated later in Siman 390, SD:" Nevertheless, despite his question, it is evident that there is no prohibition on bathing after thirty days.