Palmitoyl Dipeptide-17: 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: July 1, 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 Palmitoyl Dipeptide-17?

Palmitoyl Dipeptide-17 is a lab-crafted molecule that combines a short chain of two amino acids with palmitic acid, a fatty acid commonly found in palm oil and other plant sources. The palmitic acid tail helps the peptide slip into the skin’s lipid layers, making the ingredient more effective in topical products. First explored in the early 2000s during the rise of peptide technology in beauty care, it quickly gained attention for its potential to support stronger, healthier looking skin and hair.

The manufacturing process starts with creating Dipeptide-17 through controlled synthesis of two specific amino acids. This dipeptide is then reacted with palmitoyl chloride, attaching the fatty acid segment and yielding Palmitoyl Dipeptide-17. The resulting compound is purified, tested for stability and delivered as either a powder or a pre-dissolved solution that formulators can blend into finished products.

You will most often spot Palmitoyl Dipeptide-17 in leave-on items such as eye creams, facial serums and anti-aging moisturizers. It also appears in lash and brow conditioners, hair masks and scalp treatments where strengthening and protective benefits are desired.

Palmitoyl Dipeptide-17’s Cosmetic Benefits/Uses

When added to a formula Palmitoyl Dipeptide-17 contributes a trio of helpful actions that improve how skin and hair look and feel.

  • Hair conditioning: The peptide can coat and smooth hair fibers, leading to softer, more manageable strands and a subtle boost in shine. In lash and brow products it helps reinforce fragile hairs so they appear fuller and less prone to breakage.
  • Skin conditioning: By supporting the skin’s natural protein network, it promotes a firmer texture and a plump, hydrated look. Users may notice reduced roughness and an overall refreshed appearance.
  • Skin protecting: The ingredient forms a light, breathable film that helps shield the skin surface from moisture loss and daily environmental stressors, helping maintain a resilient barrier.

Who Can Use Palmitoyl Dipeptide-17

Palmitoyl Dipeptide-17 is gentle enough for most skin types. Dry and mature complexions often see the biggest boost because the peptide helps lock in moisture and support firmness. Oily and combination skin can also benefit since the ingredient is lightweight and does not leave a greasy feel. People with very sensitive or highly reactive skin should approach with a bit more care because any new peptide could, in rare cases, trigger redness or itching.

The compound is made entirely from lab-synthesized amino acids and a plant-derived fatty acid, so it is suitable for both vegetarians and vegans. No animal testing is required for its production by most reputable suppliers, though checking the finished brand’s cruelty-free status is still wise if that is important to you.

Current research shows no specific risks for pregnant or breastfeeding women when using Palmitoyl Dipeptide-17 in normal cosmetic amounts. Even so this information is not medical advice. Anyone who is expecting or nursing should discuss any skincare routine with a qualified healthcare professional to be on the safe side.

The ingredient does not make skin more sensitive to sunlight, so there is no added risk of photosensitivity. Standard daytime sun protection, however, is always recommended for overall skin health.

Potential Side Effects/Adverse Reactions

Side effects from topical Palmitoyl Dipeptide-17 differ from person to person. The points below list potential reactions, yet most users will not experience them when the ingredient is included at normal cosmetic levels.

  • Mild redness or warmth at the application site
  • Temporary itching or tingling as the product absorbs
  • Rare cases of small surface bumps or hives in those with peptide allergies
  • Eye irritation if the product accidentally gets into the eyes
  • Interaction with highly acidic formulas which could reduce the peptide’s stability

If any discomfort or irritation occurs stop using the product and consult a medical professional if symptoms persist or worsen.

Comedogenic Rating

Rating: 1 out of 5. Palmitoyl Dipeptide-17 has a small fatty acid tail that could, in theory, sit on the skin surface, yet it is usually used at very low levels and is balanced by its water-loving peptide portion. Together this keeps the ingredient light and unlikely to clog pores. It is generally suitable for people who are prone to acne or breakouts.

Most formulas that feature this peptide are light creams, gels or serums, which also lowers any risk of pore blockage. As always overall product design, including other ingredients, can affect how skin reacts.

Summary

Palmitoyl Dipeptide-17 conditions hair, conditions skin and offers a thin protective film. It does this by pairing a short chain of amino acids that can signal support for proteins with a palmitic acid segment that helps it blend into the skin’s natural oils, letting it smooth strands, plump skin and guard the surface from moisture loss.

While not as famous as some bigger name peptides, it has a steady fan base in eye creams, lash serums and gentle anti-aging products thanks to its soft feel and multi-tasking nature. Safety data shows a low risk profile when used at cosmetic levels, but as with any new skincare ingredient doing a quick patch test is wise just to be on the safe side.

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