Amplify the effect of your creams with a serum. This product is dermatologically tested, which means it's been tested on humans.
From Amazon
NIVEA Hydra Skin Effect Hyaluronic Acid Serum (100ml), Light Weighted Face Serum Provides Intense 72H Hydration for Plumped Up and Glowing Skin. 20 Sec. Rapid Absorption
Justmylook
Nivea Hydra Skin Effect Boosting Serum with Hyaluronic Acid for All Skin Types 100ml
OnBuy
Hydra Skin Effect Hyaluronic Acid Serum (100ml), Light Weighted Face Serum Provides Intense 72H Hydration for Plumped Up and Glowing Skin. 20 Sec.