A highly concentrated, milky hydrating serum that delivers 7 barrier benefits in one drop-for visibly dewier, healthier-looking skin. It provides deep hydration, strengthens the moisture barrier & is clinically shown to visibly repair skin in 7 days-for more resilient, makeup-optional skin. Clinical Results Boosts hydration in 1 hour & keeps skin hydrated for up to 7 days* Instant & lasting dewy hydration* Improves hydration, texture & radiance in 1 week* 100% had improved hydration* Visibly repairs the skin barrier in 7 days** * Based on TEWL measurements on tape-stripped skin in a clinical study of 33 people; (improvement observed within the first application and supported by expert grading at week-1. ) Individual results may vary. ** Based on TEWL measurements on tape-stripped skin in a clinical study of 33 people. Individual results may vary. Benefits 7 barrier benefits, 1 drop: maximize moisture, visibly repair barrier, soothe, strengthen, smooth, improve visible redness & irritation, visibly boost elasticity Deep, long-lasting hydration while helping prevent water loss Milky, lightweight; dewy (not greasy); layers under skincare, makeup & SPF (no pilling) Dermatologist-tested; suitable for sensitive, acne-, eczema- & rosacea-prone skin. | Paula's Choice 7% Ectoin Booster, 20 ml | Dermstore