No. Hair does not break down in water the way toilet paper does. It tangles, wraps around anything rough inside the pipe, and catches paper and grease until the line clogs. A little hair from cleaning a brush will not stop a toilet overnight, but it builds up in the main sewer line over time.
Toilet paper is made to fall apart once it is wet. Hair is a protein strand that stays intact for years. As it moves through the sewer line, it snags on joints, root tips, scale, and the rough walls of corroded pipe. Every strand that catches holds the next one, and the growing mat traps paper, wipes, and grease until water can no longer pass.
Older DFW homes with cast iron sewer lines are the most vulnerable. Corroded cast iron has a rough, scaly inside wall that grabs hair. Lines with root intrusion trap it even faster.
Put hair in the trash, not the toilet or the sink. If a line already clogs every few months, snaking punches a hole through the mat and leaves the rest on the pipe wall. That is why the clog returns. Hydro jetting scours the wall clean. On fragile cast iron, the camera should confirm pipe condition before jetting.
Nuflow DFW is a licensed trenchless sewer contractor serving 25 Dallas-Fort Worth cities, RMP# 46694. Our drain cleaning clears hair mats from the main line, and a camera inspection shows whether rough pipe keeps catching them. You keep the footage. Call (469) 701-0597.