The INKEY List Collagen Peptide Serum — 1.01 fl oz lightweight peptide serum to plump, firm and reduce fine lines

The INKEY List Collagen Peptide Serum is a lightweight peptide serum designed to visibly plump and firm skin while helping reduce the appearance of fine lines and wrinkles.

This serum combines Matrixyl 3000 and Syn-Tacks dual peptide technology in a gentle, fragrance-free formula that layers easily into morning and evening routines. It’s formulated to mimic some of the effects of natural collagen, supporting skin that looks smoother and more resilient without heavy oils or irritating fragrances. The 1.01 fl oz bottle delivers a concentrated treatment intended to be used after hydration and before moisturiser.

How does this serum help skin look plumper and firmer?

The serum uses targeted peptides known for encouraging visible skin-smoothing effects and improving skin texture when used consistently. These ingredients work on the skin’s surface to help it appear firmer and to support a more lifted look over time. Results depend on regular application alongside good hydration and sun protection.

• Matrixyl 3000 mimics collagen-supporting activity for a plumping effect.
• Syn-Tacks dual peptide boosts the formula’s smoothing potential.
• Lightweight, fast-absorbing base allows layers of actives and moisturisers.

Can I use this serum with other skincare steps I already follow?

Yes — the Collagen Peptide Serum is designed to slot into most routines after cleansing and hydrating serums and before creams or oils. It pairs well with hyaluronic acid serums for extra hydration and with ceramide-based moisturisers to support the skin barrier. Always finish daytime routines with SPF to protect results and skin health.

• Apply after hyaluronic acid or water-based treatments for best absorption.
• Follow with a moisturiser like a bio-active ceramide cream to lock in benefits.
• Use sunscreen each morning to protect treated skin and extend visible improvements.

Is this suitable for sensitive or acne-prone skin?

Formulated without fragrance and labelled cruelty-free, the serum aims to be gentle enough for many skin types, including sensitive skin. Because it’s lightweight and non-greasy, it’s also compatible with acne-prone routines, but patch testing first is recommended if you have reactive skin. If you use prescription actives, introduce the serum gradually and monitor tolerance.

• Fragrance-free formula reduces the risk of irritation for sensitive skin.
• Non-comedogenic texture suits oily and acne-prone complexions.
• Patch test on the inner arm before full-face application when in doubt.

How should I apply this serum for best results?

A little goes a long way: use a pea-sized amount morning and night after cleansing and hydrating. Gently pat the serum into the face and neck, then follow with your chosen moisturiser and sunscreen in the daytime. Consistent use over weeks provides the likeliest path to visible smoothing and plumping effects.

• Use AM and PM after cleansing and a hyaluronic acid serum.
• Pat a pea-sized amount across face and neck; avoid rubbing vigorously.
• Finish the morning routine with a broad-spectrum SPF.

Who is this for: The INKEY List Collagen Peptide Serum is for anyone seeking a gentle, peptide-forward treatment to support visibly plumper, firmer-looking skin and reduce the look of fine lines. It suits people wanting a lightweight, fragrance-free booster that layers well with hydrating serums and moisturisers, and those building a preventative or corrective anti-ageing routine without heavy textures.