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STRATUM Skin Science

FRM Formula

Serum

Peptide Recovery Serum

A signal peptide formulated to reach the junction it's meant to reach -- not a promise about what happens after.

$84 30ml

Palmitoyl Pentapeptide-4 is formulated to reach the dermal-epidermal junction, where fibroblasts are thought to read it as a signal to keep producing collagen. “Thought to” is doing real work in that sentence — peptide signalling is an active, evolving area of research, not a closed case, and we would rather say so than round it up to certainty.

Our highest-priced formula, reflecting the ingredient cost of a peptide at a meaningful concentration rather than a luxury markup on packaging.

Built around

  • Signal Peptides Dermis

    Formulated to reach the dermal-epidermal junction, where fibroblasts are thought to read them as a signal to keep producing collagen.

  • Niacinamide Epidermis

    Reaches the living epidermis, where it is commonly associated with supporting the skin's own lipid production.

Where this formula works

INCI Full Ingredient List

Full INCI ingredient list, in formulated order
# INCI Name
01 Aqua
02 Glycerin
03 Palmitoyl Pentapeptide-4
04 Niacinamide
05 Butylene Glycol
06 Sodium Hyaluronate
07 Panthenol
08 Carbomer
09 Sodium Hydroxide
10 Phenoxyethanol
11 Ethylhexylglycerin

Listed in descending order of concentration, as required for cosmetic labelling. Trace/regulatory-threshold ingredients appear last.

USE How To Use

AM or PM, under a moisturiser. Where users report a change, it is typically discussed in terms of weeks to months of consistent use, not days -- we have not built a "before and after in one week" claim into this label because the evidence for that timeline does not exist.