Mason Pearson Cleaning Brush in Beauty: NA. Mason Pearson Cleaning Brush in Beauty: NA. The Mason Pearson cleaning brush is designed to gently and effectively remove hair and debris from your chosen hairbrush.. Cellulose acetate brush. MPEA-WU4. MP-CLEANBR. Mason Pearson hairbrushes are instantly recognizable around the world and have always been made in London, England. The brand believes in traditional values including loyalty, luxury and efficacy and have always been committed to building hairbrushes that really last - sustainability has always been their mantra. The brand hand-makes the iconic rubber pad using the techniques founder Mason Pearson invented in the 19th century and were patented in 1911. In total, there are 18 stages to create each hairbrush, including six finishing stages where the hairbrush is repeatedly hand polished and hand-embossed with gold foil on the handle. Every little detail is considered, and each hairbrush is packaged in retro packaging that is true to the design from the 1920s.