All agree that when Erev Shabbos is Rosh Chodesh Menachem Av, one who washes every Friday with hot water, soap, and shampoo, may do so this Erev Shabbos also.
Shabbos Bulletin Parshas Matos-Masei 5778
About the Author: Lev Seltzer
Lev Seltzer has been a member of Beis Tefillah from just a short time after its founding. He currently manages the BTYA.org website, and can be found every morning in the BTYA "Vasikin Room" where he is the gabbai of the minyon.