The 1% INCI Rule and Peptide Positioning
Under FDA and EU cosmetic labeling regulations, ingredients present at concentrations greater than 1% must be listed in descending order of predominance. Ingredients present at 1% or less may be listed in any order after the 1% threshold.
In conventional water-based serums, broad-spectrum preservatives like Phenoxyethanol are capped at a maximum regulatory concentration of 1.0% (and typically dosed between 0.5% and 0.8%).
In Rhode Peptide Glazing Fluid, Acetyl Hexapeptide-8 sits below Phenoxyethanol and thickeners, indicating a concentration under 1% of the active raw material solution. While signal peptides function at parts-per-million levels, effective clinical results demand verified therapeutic thresholds.
The Ordinary's Multi-Peptide Complex Load
The Ordinary Multi-Peptide + HA discloses its proprietary peptide complex concentrations totaling over 25% by weight of commercial peptide solutions:
- Matrixyl 3000 (Palmitoyl Tripeptide-1 + Palmitoyl Tetrapeptide-7)
- Matrixyl Synthe'6 (Palmitoyl Tripeptide-38)
- Syn-Ake (Dipeptide Diaminobutyroyl Benzylamide Diacetate)
- Relistase (Acetylarginyltryptophyl Diphenylglycine)
- ARGIRELOX peptide complex alongside a multi-weight hyaluronic acid matrix.
This multi-pathway architecture stimulates collagen types I, III, and IV synthesis while relaxing facial micro-tension.
Takeaway: Rhode Glazing Fluid is primarily a cosmetic hybrid: a dewy, lipid-rich emollient fluid (Marula oil + Niacinamide) that gives immediate reflective radiance. The Ordinary is a clinical peptide treatment designed for structural dermal support.
Vehicle Physics: Emollient Glaze vs. Aqueous Serums
Rhode utilizes an emulsion base containing Sclerocarya Birrea (Marula) Seed Oil, Caprylic/Capric Triglyceride, and Niacinamide. This creates a high-refraction optical film on the stratum corneum that diffuses light and reduces immediate TEWL.
The Ordinary uses an oil-free aqueous gel with multiple molecular weights of sodium hyaluronate. It absorbs without surface sheen, requiring an occlusive moisturizer layered overtop to prevent evaporative water loss.
Choose Rhode for daytime instant glass-skin aesthetics; choose The Ordinary for high-potency nightly cellular remodeling.