Ingredient guide
Diaminopropionyl Tripeptide-33
INCI name · diaminopropionyl tripeptide-33
In short
Diaminopropionyl Tripeptide‑33 is a peptide that helps protect collagen and elastin from breakdown. This helps keep the skin’s structure looking firmer and more even over time.
What it is
Matrix metalloproteinase (MMP-1 and MMP-2) inhibitory peptide; prevents enzymatic degradation of collagen and elastin in the extracellular matrix; preserves ECM structural integrity under UV and oxidative stress; works synergistically with collagen-stimulating peptides by simultaneously blocking degradation and promoting synthesis; a dual-pathway aging intervention in a single ingredient.
Evidence receipt
No linked study yet
No verified study is linked to this exact ingredient and route. The guidance below describes conventional use; it is not evidence of efficacy.
When to use it
Evenings suit it best.
Where it sits
Serums sit after toner and before moisturiser. Thinnest to thickest, water before oil.
- Cleanse
- Tone
- Diaminopropionyl Tripeptide-33
- Moisturise
- SPF
Also found as
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Check an ingredient listCommon questions
What does Diaminopropionyl Tripeptide‑33 do for skin?
It supports the skin’s structural proteins by reducing the impact of enzymes that break them down, helping maintain smoothness and elasticity.
Who might benefit from this peptide?
It suits those wanting to preserve firmness or refine texture, and it layers well with collagen‑supporting peptides.
How is it used in skincare products?
You’ll typically find it in serums and creams aimed at maintaining firmness and protecting the skin from daily stressors.
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Personal guidance, not medical advice.