Cotton Wool Roll (500g). Hospital Quality Pure Cotton Wool Interleaved. Cotton wool roll is the perfect product for larger cleansing tasks or quickly mopping up fluids, when a little more cotton wool is needed. Supplied in a value for money 500g pack, these rolls are made using 100% pure cotton, which is soft and gentle for babies skin and yet strong and highly absorbent.. Carefully combed cotton wool is layered together into an extremely soft and fluffy fleece, before being rolled into a conveniently sized pack.. During use, the product is easy to unroll without sticking together and the required quantity can be gently torn off, without waste.