Alpaca is the perfect wool for children: hypoallergenic and smooth against delicate skin, it also features some water-resistant and stain-resistant properties. To wash your hand-knitted baby alpaca clothing, soak in cold water with a mild detergent. Be careful not to wring or twist, or the garment will become misshapen. Rinse well and roll between two towels to get out the excess moisture. Lay flat on a clean, dry towel to dry.