Purex Complete 3-in-1 Laundry Sheets are a load’s worth of detergent, softener and anti-static, all in one powerful sheet. Simply drop laundry sheet into washer, the detergent is released during the wash cycle. Once wash is complete, transfer the laundry sheet with clothes to dryer. The stripe is heat activated by the dryer to soften and remove static. It’s that simple. No more heavy bottles. No more messes. It’s Laundry. Simplified.