The IQ serum Shot are a game changer, they boosted my skincare routine. My favorite serum is the Vitamin C, my skin is now glowing and brighter. The Hyaluronic Acid serum delivers, I like using it with the Vitamin C this combo makes my skin glow and stay hydrated the whole day. Retinol Serum is also very good, I 100% recommend these serums and I will be repurchasing.