A normal sanitary pad must have a majority of Wood pulp in its absorbent body. Anyone who says that material sanitary pads do not have Wood pulp in them is not a professional in the field, but in fact the fluff pulp in sanitary pads is broken up on site during production. It is a roll of very stiff fibres, one for hygiene and one for ease of transport. The main reason for using fluff pulp is that this fluffy fibre is the fastest and most effective in absorbing liquids, because it has a "capillary phenomenon", but of course you may ask if the water is not squeezed out when you squeeze it gently. The absorbent resin absorbs water relatively quickly, but once absorbed the water never runs out.