To maintain the softness and prevent pilling, store your mohair garment carefully. Fold it rather than hanging it in your closet, and keep it in a breathable storage bag if storing long-term. You can also lightly brush your sweater with a soft garment brush to revive the fibers and maintain its fluffy texture.
Finally, be mindful of wearing your mohair knit with rough fabrics or accessories that could snag the delicate fibers. With these simple steps—gentle washing, flat drying, careful storage, and mindful wearing—your mohair knit will remain a luxurious, cozy addition to your wardrobe for many seasons.