Discover Lenor in-wash scent boosters. For a boost of freshness from wash to wash (up to 12 weeks in storage), Lenor infuses your clothes with Northern Solstice scent. Northern Solstice is a fresh, airy, energising scent. Crisp airy forest notes will transport you to a snow-covered woodland cabin, as the sky fills with the magic of the Northern Lights. Lenor Northern Solstice In-Wash Scent Boosters were created to work in perfect harmony with Lenor Outdoorables Northern Solstice Softener. They are enchanting on their own… and irresistible together. I feel good in Lenor.