Acetyl Tetrapeptide-5 vs Tetrapeptide-51

Both are categorized under Eyes in our directory—here is how they differ in name, use, and label context.

Acetyl Tetrapeptide-5

Eyes

Close-up healthy skin

An eye-area peptide often marketed for puffiness and tired-looking under-eyes.

Brands position this peptide to improve fluid drainage around the eyes and reduce the look of bags and puffiness. It is a supporting ingredient—helpful in a good eye cream, not a substitute for sleep or allergies treat…

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Tetrapeptide-51

Eyes

Tetrapeptide-51 illustration

A skin conditioning peptide ingredient listed in EU cosmetic databases—often used in eyes formulas.

Tetrapeptide-51 EU CosIng describes it as: Tetrapeptide-51 is the synthetic peptide consisting of alanine, glycine and serine.. In skin care it is typically a supporting active—meant to complement hydrators and antioxi…

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Quick comparison

  • Acetyl Tetrapeptide-5: Eyes — An eye-area peptide often marketed for puffiness and tired-looking under-eyes.…
  • Tetrapeptide-51: Eyes — A skin conditioning peptide ingredient listed in EU cosmetic databases—often used in eyes formulas.…