Kenneth Mark, FAAD, FACMS, a board-certified cosmetic dermatologist and injectables expert, likes to level the field for his patients before recommending the best wrinkle fillers to use at home.

A dermatologist weighs in on one of the serum's main ingredients, peptide Argireline — and explains how it works.

We put three wrinkle filler creams to the test to see if they actually make an impact on our skin. Here's what we found.