DOCTOR BABOR Collagen-Peptide Derma Filler Serum With 7% collagen peptide complex the Derma Filler Serum stimulates collagen synthesis and helps trigger the four collagen families for a firmer,\ complexion. Low-molecular hyaluronic acid reinforces the skin’s barrier, increases its moisture balance, and reduces trans epidermal water loss, which has been shown to reduce wrinkles and improve skin texture.