Peptide Glow Journal

Skinfix Triple Lipid-Peptide Cream: A Barrier Formula Whose Peptide Is One Ingredient, and It Is Rice

The brand's '3% peptide solution' resolves to a single INCI name, hydrolyzed rice protein, at position 25 of 47. The formula's weight sits in its lipids and humectants.

Fiona G · Edited by Caroline S · Published 2026-09-17

Illustration: A single grain of white rice on a rose-beige ceramic surface in soft, warm natural light.
Illustration

The name puts peptide on equal billing with lipids, and the brand's description gives each a percentage. Read against the declaration, the two halves of the name are not the same size. The lipid half is several ingredients across the list. The peptide half is one ingredient, and it is rice.

The three blocks, mapped to the label

Skinfix describes the formula in three parts. The brand's published list, formula code 2422, lets each be found:

Brand's block Brand's figure What it resolves to on the label Positions
Triple Lipid Complex — ceramides, sterols, fatty acids 3% Ceramide NP, AP, EOP · cholesterol · phytosterols, phytosteryl esters · phytosphingosine · palmitic acid 22–24 · 41 · 19, 31, 36 · 40 · 12
Peptide Solution — "barrier-repair protein-builders" 3% Hydrolyzed rice protein 25
Humectant Blend — hyaluronic acid, glycerin, red algae 8% Glycerin · Chondrus crispus (red algae) extract · sodium hyaluronate 3 · 26 · 29

List read on skinfix.com, 2026-09-17; positions counted from the brand's declaration.

A supplier "solution" is mostly carrier. Cosmetic actives are commonly sold dissolved or dispersed in water or glycols, and a formula percentage for the solution is not the percentage of active inside it. Our SNAP-8 entry sets out that arithmetic with a supplier's own figures: 10% of that solution is about 0.005% peptide. The brand does not state how much peptide its 3% solution contains, and the label position — 25th, after pentylene glycol at 21 and all three ceramides — is consistent with a small amount.

What hydrolyzed rice protein is

It is rice protein cut into a mixture of peptide fragments of varying length. That makes it a different kind of ingredient from the peptides this site usually covers:

  • It is not a defined molecule. Palmitoyl tripeptide-1 or acetyl hexapeptide-8 each have one structure and one weight in PubChem. A protein hydrolysate has neither, so there is no weight to set against the 500-dalton penetration heuristic and no single sequence to study.
  • It is not a signal peptide. Nothing on the brand's page claims it acts on collagen or muscle; it calls it a "protein-builder" that helps skin retain moisture, which is the conditioning role hydrolysed proteins have long had in cosmetics.

The published record on it is thin and mostly not about skin. PubMed on 2026-09-17 held 42 title-or-abstract records for hydrolyzed rice protein or rice protein hydrolysate, most of them food and nutrition work. Restricted to skin, topical or cosmetic terms, three remain:

  1. A laboratory study (Molecules 2021) measuring free-radical scavenging and inhibition of two enzymes, hyaluronidase and tyrosinase, by rice protein hydrolysates in test tubes. Half-inhibition of tyrosinase needed 107.6 mg/mL of hydrolysate solution. No skin, no people.
  2. A laser case series (J Drugs Dermatol 2018) combining diode laser lipolysis with a topical tightening treatment — the hydrolysate is not the variable.
  3. The Cosmetic Ingredient Review's 2006 amended safety report on rice-derived ingredients, which describes hydrolyzed rice protein as a conditioning agent and reports rice bran protein hydrolysates as not irritating or sensitizing in animal and clinical tests.

That third record is the most useful thing in the file for this product: a safety finding for a cream sold to sensitive skin. It is not evidence of barrier repair.

Where the formula's weight actually is

The top of the list is emollient. After water come caprylic/capric triglyceride, glycerin, shea butter, vegetable oil and cetyl lactate. Positions 2 to 11 are mostly oils, esters, butters and fatty alcohols, with glycerin and propanediol among them — the occlusive and emollient base that slows water loss from the skin surface.

The barrier lipids are the formula's organising idea. Ceramides, cholesterol and free fatty acids are the three main lipid classes of the stratum corneum, and the label carries all three types. The ceramides sit at 22 to 24 and cholesterol at 41, in the region our peptide serum explainer shows is at or under the 1% line, where declaration order stops carrying reliable meaning. PubMed tags 44 randomized controlled trials matching ceramides and the skin barrier, a far larger file than the peptide's.

Set beside our peptide moisturizer explainer — which found 613 randomized trials of moisturizers, 130 measuring barrier function, and 5 involving a peptide — the pattern is familiar. The measurable barrier effects in this category belong to occlusives, humectants and lipids. This formula has a great deal of all three.

The brand's trial, as published

The product page reports results from a 4-week clinical trial on 35 subjects:

Measure, as the brand reports it Method stated Result
Glow expert clinical grading, 4 weeks +26%
Smoothness expert clinical grading, 4 weeks +29%
Firmness expert clinical grading, 4 weeks +12%
Hydration corneometer, immediately +46%
Hydration corneometer, 4 weeks +67%
Barrier function improved vapometer, immediately 35 of 35

No control or vehicle arm, publication, study sponsor or statistical test is given. An immediate hydration rise after applying a rich cream is expected of any emollient base, which is why a vehicle comparison is the design that separates a formula's actives from its texture. Without one, none of these figures can be attributed to the peptide, the ceramides or the base. The brand also lists a consumer perception result from the same 35 people, which is a questionnaire rather than a measurement.

Two lists under one name

Third-party ingredient databases list a product with this name and an older-looking declaration that does not name ceramide NP, AP or EOP, or cholesterol. The brand's page describes the cream as the original formula re-introduced, carries a formula code, and asks readers to check packaging for the current list. A reader comparing a jar to an online list may see either. This analysis uses the brand's own list as published on 2026-09-17.

What can be read off the list

It establishes an emollient-rich base, all three stratum corneum lipid classes on the label, a conventional humectant block, and a single peptide-class ingredient — a rice protein hydrolysate — placed mid-list with a published safety assessment and no published skin-efficacy work of its own.

It does not establish what the cream does to skin, and the brand's uncontrolled trial cannot say which part of the formula did anything. We have not used it either, so the effect on skin stays an open question here.

Sources

  • Skinfix, Triple Lipid-Peptide Cream — published ingredient list (formula 2422), ingredient block percentages, clinical results and FAQ, skinfix.com, read 2026-09-17.
  • Cosmetic Ingredient Review. Amended final report on the safety assessment of Oryza sativa (rice) ingredients, including hydrolyzed rice protein. Int J Toxicol 2006;25 Suppl 2:91-120 — PubMed 17090480.
  • Evaluating the antioxidants, whitening and antiaging properties of rice protein hydrolysates. Molecules 2021 — PubMed 34204643.
  • Combined hyperthermic 1060 nm diode laser lipolysis with topical skin tightening treatment: case series. J Drugs Dermatol 2018 — PubMed 30005101.
  • PubMed record counts via NCBI E-utilities, run 2026-09-17.

Frequently asked questions

What peptide is in Skinfix Triple Lipid-Peptide Cream?

One peptide-class ingredient appears on the brand's published list: hydrolyzed rice protein, at position twenty-five of forty-seven. It is a mixture of peptide fragments made by breaking down rice protein, not a named signal peptide such as those sold as Matrixyl or Argireline. The brand calls this part of the formula a 3 percent peptide solution.

Does 3% peptide solution mean the cream is 3% peptide?

Not on the evidence of the label. Cosmetic suppliers sell actives as solutions or dispersions, mostly water or glycol carrier, and a formula percentage for the solution is not the percentage of active in it. The ingredient declaration places hydrolyzed rice protein at position twenty-five, below pentylene glycol and the three ceramides, which is consistent with a small quantity. The brand does not publish the peptide content of the solution.

What is the triple lipid complex?

The brand describes it as ceramides, sterols and fatty acids at 3 percent. On the label that corresponds to ceramide NP, AP and EOP at positions twenty-two to twenty-four, cholesterol at forty-one with phytosterols and phytosphingosine nearby, and palmitic acid at twelve. Ceramides, cholesterol and free fatty acids are the three main lipid classes of the skin's outer barrier layer, which is the rationale for combining them.

What does the brand's clinical trial show?

The brand reports a four-week trial in 35 people: expert-graded glow up 26 percent, smoothness up 29 percent and firmness up 12 percent, hydration up 46 percent immediately and 67 percent after four weeks, and immediate barrier improvement in all 35. No control or comparison arm, publication or funding statement is given, so the figures are changes from baseline in people using the product, and they cannot be assigned to the peptide or to any other ingredient.

Why do some ingredient lists for this cream look different?

Third-party ingredient databases show an older-looking list for the same product name without the three ceramides or cholesterol named. The brand's page carries formula code 2422 and describes the product as the original formula re-introduced, and it asks readers to check the packaging for the current list. This analysis uses the brand's published list as read on 2026-09-17.

Is hydrolyzed rice protein safe on skin?

The Cosmetic Ingredient Review's 2006 amended safety assessment of rice-derived ingredients reports that rice bran protein hydrolysates were not skin irritants or sensitizers in animal tests and were not irritating or sensitizing in clinical tests, and describes hydrolyzed rice protein as a conditioning agent. That is a safety finding. It is not evidence of an effect on the skin barrier.

Has Peptide Glow Journal tested this cream?

No. The page maps Skinfix's published list — including where its single peptide-class ingredient, hydrolyzed rice protein, sits — against the literature on each component. Our product assessments need six weeks of split-face use by two testers, photographed to a fixed standard; this cream has had none of that. The page therefore says nothing about how the cream performs on skin.