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Palmitoyl Tripeptide-1

What Palmitoyl Tripeptide-1 is & what it does

A signal peptide that helps support collagen production, improving the look of firmness and fine lines. It is often paired with other peptides for smoothing benefits.

What is Palmitoyl Tripeptide-1 and what does it do in sunscreen?

Palmitoyl Tripeptide-1 is a signal peptide, a short chain of amino acids linked to a fatty (palmitoyl) tail so it can absorb better. It is used to help support the skin's collagen, which can improve the look of firmness and fine lines over time. In a sunscreen it is an anti-aging support ingredient and is often paired with other peptides for a smoothing effect.

What else is Palmitoyl Tripeptide-1 called?

It appears on labels as the INCI name Palmitoyl Tripeptide-1. In marketing you may also see it grouped under general terms like peptide or pro-collagen peptide. The INCI form is what is printed in the ingredient list.

Is Palmitoyl Tripeptide-1 safe?

Generally yes. It is a peptide used at very low levels and is well tolerated by most people, with no notable irritation concern in normal cosmetic use. Our data does not flag it as an allergen. As with any active, a patch test is sensible if your skin is reactive.

Does Palmitoyl Tripeptide-1 clog pores?

Generally no. It is used in tiny amounts as a peptide active rather than as a heavy oil or wax, and our data does not flag it as comedogenic. It is an unlikely cause of breakouts. If a product clogs your pores, the richer emollients in the formula are more likely responsible.

Is Palmitoyl Tripeptide-1 natural or synthetic?

It is synthetic, built in a lab from amino acids joined to a fatty acid chain. The building blocks resemble materials the skin already recognizes, but the finished peptide is made rather than harvested. This lab-made consistency is part of why it is used in skincare.

Sunscreens with Palmitoyl Tripeptide-1

We rate 115 sunscreens that contain it, showing the top 10 by overall score:

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