A peptide is
an instruction.
Not a hydrator. Not an acid. A short chain of amino acids that tells the skin which proteins to build. AUTEUR formulates with six, each aimed at a different part of the structure.
It is a library.
Most skincare hydrates the surface. Peptides address the machinery underneath.
Collagen and elastin are proteins the skin builds for itself, and it builds less of them with age. A moisturiser cannot change that. It sits above the layer where the decision is made.
Peptides are signalling molecules. They instruct fibroblasts, the cells that manufacture structural protein, to produce more. That is a different category of action from hydration, and it is why the peptide has to be the right one, aimed at the right thing.
The six, and what each one is for
Where each one lives
Definitive Line Serum
Collagen Activator Serum
Definitive Density Cream
Composition No. 1
Build the routine
Expression lines first. Two pumps to forehead, crow's feet and between the brows, on clean skin.
Full face and neck. Let it absorb fully before the next step so the peptides are not diluted.
Over the serums, morning and evening. This is the layer that holds the work in place.
Evenings only, in place of the cream. Retinol released across the night rather than delivered at once.
Three kinds of peptide
Signal peptides
Tell fibroblasts to produce new collagen, elastin and fibronectin. They do not hydrate. They activate the skin's own repair machinery and then get out of the way.
Neurotransmitter peptides
Modulate muscle contraction at the neuromuscular junction, reducing the dynamic lines that come from expression rather than from age. SYN®-AKE is the reference standard.
Carrier peptides
Deliver trace minerals, copper among them, into the repair cascade, and support the enzymatic processes behind collagen crosslinking and skin density.
The ingredient library
Your skin's architecture starts here.
Six peptides across the Definitive Collection, with full ingredient disclosure on every page.