Tetrapeptide-4 is a man-made peptide of four amino acids designed for easy inclusion in water-soluble skincare. It's used for skin conditioning and a smoother, more even look in primers and serums, though current independent evidence is limited.
A peptide used to smooth texture and even out skin's appearance.
Category
Skin Conditioning, Anti-aging, Tone/Texture
Type
Peptide
Ratings
Overall Rating
Fair
Comedogenic Risk
None
Not typically evaluated for comedogenicity — no standardized rating available.
Our take
Is Tetrapeptide-4 a Good Ingredient?
It rates Fair since evidence for improving tone and texture is still early-stage, keeping expectations modest. There's also a slight risk of irritation or sensitization, particularly near the eyes.
What it does
Skin Benefits
May reduce the look of rough texture and promote a more uniform complexion. Research to date is preliminary.
Where you'll find it
Uses in Skincare & Cosmetics
Found in brightening serums, makeup primers, and hydrating gels to create a smoother canvas.
Before you use it
Safety
Generally low irritation potential and unlikely to clog pores, but discontinue if redness or stinging develops. No known special cosmetic regulatory restrictions.