Wheat starch powder for dry dosing and dosing from stock solution. Bio Size is a wheat-based starch, a natural product. This product has a small average particle size and can be cooked for making a stock solution. The particle can penetrate well in to fabric and offer crisp finishes. Product contains a high proportion of amylopectin and therefore has high cohesiveness and forms good films. High amylopectin starches are also suitable for preparation of stable stock solutions. The wheat starch film on the fibres will act as a protective layer, thus restricting penetration of soil into the fibres.