Sometimes it’s not just the wipers, the windscreen picks up contaminants, and a lot of cheap car shampoo with added detergents (for example) exacerbate the problem. Make sure the glass is properly clean, then use a damp microfibre with glass polish and towel dry. Bosch wipers are very good compared to Valeo. You can use a little methylated spirit along the edge to remove residue after every wash.