Dr. Roebuck's Ningaloo Copper Peptide Firming Serum The Dr. Roebuck's Ningaloo Copper Peptide Firming Serum (£55) contains only six ingredients, including hyaluronic acid, banksia flower, and copper tripeptide. But it's the latter that's the real star of the skin-firming show. The antioxidant helps instigate collagen production and increase cell turnover to help both firm the skin and give it a just-left-the-spa glow. Image Source: cultbeauty.co.uk Dr. Roebuck's Ningaloo Copper Peptide Firming Serum £55 from cultbeauty.co.uk Buy Now