 As the official detergent of outfit repeating, Persil laundry detergent features a formula that we designed specifically to clean the fabrics deep into the fibers so you can confidently wear your outfits on repeat. Another tip actually is to take that favorite garment and turn it inside out so that when you're washing it, there's some friction that can happen between the fabrics. So you want that to happen on the inside of the garment instead of the outside of the garment.