Pe
Peptides
Tripeptide-1Active
Small proteins in firming serums. Some tell skin to make collagen, some carry minerals, some relax expression lines. Evidence varies.
What it does
Peptides are short pieces of protein that send signals to skin. The ones that carry trace minerals are copper peptides, and the ones for expression lines relax the small muscles behind them.
The evidence, graded
emergingFine together for your skin; the only question is whether the acid's low pH makes the peptide less effective. To rule it out, use the acid in the morning and the peptide at night. The only stability test here found the peptide intact down to pH 4.5; a vitamin C or AHA layer sits below that, which nobody has tested, and no study Drop has read applied the two in one step.Errante 2020 · Frontiers in Chemistry ↗
emergingFine together — peptides (short chains of amino acids) such as palmitoyl tripeptide-1 are thought to work differently from retinol.Mukherjee 2006 · Clinical Interventions in Aging ↗
Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.
Pairs worth knowing
Browse all 1238 ingredients — grouped by what they do, each with whatever evidence we can cite.
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