Get overnight lip therapy with this leave-on lip mask designed to soothe, soften and replenish your lips while you sleep. The smooth, nutrient-rich formula provides long-lasting nourishment for healthy, supple lips.ADDITIONAL INFO:- Perfect for nighttime use before bed- Lasts the entire night - up to 8 hours!- Won’t leave stains on your bed or pajamas- Thickest lip care formula- Offers the most protection Sigma Beauty Conditioning Lip Mask Silken