N-Prolyl Palmitoyl Tripeptide-56 Acetate: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: June 30, 2025
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We verify all information on this page using publicly available nomenclature standards from The Personal Care Products Council (PCPC), the European Commission's CosIng database and documentation provided directly by ingredient manufacturers. Our analysis is based on technical data from these sources to ensure accuracy and reliability.

What Is N-Prolyl Palmitoyl Tripeptide-56 Acetate?

N-Prolyl Palmitoyl Tripeptide-56 Acetate is a lab-crafted peptide that combines three amino acids with a palmitic acid chain and an acetate salt. The palmitic acid tail helps the molecule blend with skin lipids while the peptide part can signal skin cells. First explored in the early 2000s when cosmetic chemists were searching for smaller, more targeted anti-aging actives, it has become a regular in modern skin care lines.

Production starts with solid-phase peptide synthesis, where each amino acid is added step by step to build the tripeptide. The chain is then linked to palmitic acid, trimmed, purified and finally neutralized with acetic acid to form the acetate. The result is a white to off-white powder that dissolves easily in the water phase of creams or serums.

You will most often see N-Prolyl Palmitoyl Tripeptide-56 Acetate in wrinkle-fighting serums, firming eye creams, sheet masks, overnight masks, rich moisturizers and targeted neck or décolleté treatments.

N-Prolyl Palmitoyl Tripeptide-56 Acetate’s Cosmetic Benefits/Uses

This ingredient appears on labels mainly for one job.

Skin conditioning: It helps the skin feel softer, look smoother and maintain a healthy moisture balance. By signaling skin cells to support the natural repair process, it can reduce the look of fine lines and give the complexion a fresher, more even appearance.

Who Can Use N-Prolyl Palmitoyl Tripeptide-56 Acetate

This peptide is considered gentle enough for most skin types including dry, normal, combination and mature skin. Oily and acne-prone users can also benefit because the molecule itself does not add extra oil or clog pores. People with very sensitive or highly reactive skin should proceed with caution only because any new active can overstimulate delicate skin if formulas contain additional strong ingredients.

The compound is made entirely from laboratory-synthesized amino acids and a plant-derived fatty acid, so it is suitable for vegans and vegetarians.

No data point to particular concerns for pregnant or breastfeeding women when the ingredient is applied topically in typical cosmetic concentrations. This is not medical advice and anyone who is pregnant or nursing should confirm product choices with a qualified healthcare provider.

N-Prolyl Palmitoyl Tripeptide-56 Acetate does not increase photosensitivity and can be used morning or night. Because it plays well with most other actives it is easy to slot into existing routines containing antioxidants, gentle acids or hydrating agents.

Potential Side Effects/Adverse Reactions

Reactions to topical N-Prolyl Palmitoyl Tripeptide-56 Acetate vary from person to person. The following are possible yet uncommon side effects when the ingredient is used in a properly formulated cosmetic product.

  • Transient redness: Some users may notice mild flushing that usually settles within minutes of application
  • Itching or tingling: A temporary prickly sensation can occur, especially on very dry or compromised skin barriers
  • Stinging around the eyes: Formulas that migrate into the eye area may cause brief discomfort or watering
  • Allergic contact dermatitis: In rare cases individuals sensitive to peptides or preservatives in the overall formula could develop swelling, rash or blistering
  • Follicular irritation: People prone to folliculitis might see tiny bumps if the product also contains heavy occlusive agents

If any persistent or severe reaction develops discontinue use immediately and seek advice from a medical professional or dermatologist.

Comedogenic Rating

Rating: 1/5 (very low)

N-Prolyl Palmitoyl Tripeptide-56 Acetate is a small water-friendly peptide. The attached palmitic acid helps it interact with skin lipids yet the amount is tiny, so it does not act like a heavy oil or wax. It rarely thickens sebum or lingers on the surface, keeping the risk of clogged pores minimal.

This makes it broadly suitable for people who are prone to acne or breakouts.

The overall formula matters more than the peptide itself, so watch out for rich butters or occlusive silicones elsewhere in the ingredient list if congestion is a concern.

Summary

N-Prolyl Palmitoyl Tripeptide-56 Acetate is a lab-built tripeptide joined to a fatty acid that conditions skin by nudging cells to renew collagen and repair damage, leading to a smoother firmer look. The palmitic tail boosts skin affinity and the acetate salt keeps the powder stable and easy to blend into serums creams or masks.

While not as famous as retinol or vitamin C it is a rising star in anti-aging formulas because it is gentle pairs well with other actives and offers a fresh angle on peptide technology.

Safety studies and in-market use suggest a low irritation profile with very rare adverse events. Still, it is smart to patch test any new product containing this peptide to confirm personal tolerance.

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