If you ask Us, hydrating is a key factor in achieving radiant skin. Want to sport an unbelievable glow all winter? Look to this PCA Skin Hyaluronic Acid Boosting Serum. This lightweight serum packs a powerful punch that combats signs of aging as well. Designed to nourish dry, dull skin, this serum is said to boost hyaluronic acid levels by 50% within 24 hours for long-lasting hydration. It's jam-packed with skin-loving ingredients that deliver a slew of benefits.