What it is: A firming treatment that goes where none have gone before. DermaQuest Advanced 3D HydraFirm Serum is a milky serum that channels the power of peptides and plant stem cells to go deeper into the skin to restore loss of volume and firmness. What it does: With daily use, DermaQuest Advanced 3D HydraFirm Serum restores elasticity and strength to the deepest levels of the dermis, creating a visible and tangible improvement in facial plumpness, firmness, and lift.