Hand wash recommended: Hand-washing is the gentlest method for your wool socks. Use lukewarm water (maximum 30°C) and a mild detergent specially formulated for wool. Air drying: Air drying is the best option for your wool socks. Lay them flat on a clean towel, away from sources of direct heat. Do not tumble-dry: Tumble-drying can felt and shrink your wool socks.