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Nutrition guide

Bliss Bright Idea Vitamin C + Tri-Peptide Collagen Protecting & Brightening Moisturizer Versus Olehenriksen C-Rush Brightening Gel Crème

Bliss Bright Idea Vitamin C + Tri-Peptide Collagen Protecting & Brightening Moisturizer Versus Olehenriksen C-Rush Brightening Gel Crème This brightening moisturizer is formulated around 3-O-Ethyl Ascorbic Acid and Palmitoyl Tripeptide-5 to brighten dull-looki

Bliss Bright Idea Vitamin C + Tri-Peptide Collagen Protecting & Brightening Moisturizer Versus Olehenriksen C-Rush Brightening Gel Crème

This brightening moisturizer is formulated around 3-O-Ethyl Ascorbic Acid and Palmitoyl Tripeptide-5 to brighten dull-looking skin and soften the look of wrinkles.

This brightening moisturizer is formulated around 3-O-Ethyl Ascorbic Acid and Tetrahexyldecyl Ascorbate to brighten dull-looking skin and fade the look of dark spots.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Glycerin

Caprylic/Capric Triglyceride

Propanediol

Cetearyl Alcohol

3-O-Ethyl Ascorbic Acid

Coco-Caprylate/Caprate

Hydrogenated Farnesene

Glyceryl Stearate

Butyrospermum Parkii Butter

Limnanthes Alba Seed Oil

Palmitoyl Tripeptide-5

Glycyrrhiza Glabra Root Extract

Saccharide Isomerate

Ceramide Ng

Tocopherol

Niacinamide

Mangifera Indica Fruit Extract

Euterpe Oleracea Fruit Extract

Camellia Sinensis Leaf Extract

Pseudozyma Epicola/Camellia Japonica Seed Oil Ferment Extract Filtrate

Aloe Barbadensis Leaf Juice

Persea Gratissima Oil

Glycine Soja Oil

Simmondsia Chinensis Seed Oil

Argania Spinosa Kernel Oil

Xanthan Gum

Acacia Senegal Gum

Hydroxyacetophenone

Cetearyl Olivate

Caprylyl Glycol

Polyacrylate Crosspolymer-6

Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

Polyglyceryl-4 Laurate/Succinate

PEG-100 Stearate

Sorbitan Olivate

Cetearyl Glucoside

Hexylene Glycol

Ethoxydiglycol

Sodium Citrate

Tetrasodium Glutamate Diacetate

Sodium Metabisulfite

Phenoxyethanol

Ethylhexylglycerin

Potassium Sorbate

Sodium Benzoate

Citric Acid

Parfum

Limonene

Water, Glycerin, Caprylic/Capric Triglyceride, Propanediol, Cetearyl Alcohol, 3-O-Ethyl Ascorbic Acid, Coco-Caprylate/Caprate, Hydrogenated Farnesene, Glyceryl Stearate, Butyrospermum Parkii Butter, Limnanthes Alba Seed Oil, Palmitoyl Tripeptide-5, Glycyrrhiza Glabra Root Extract, Saccharide Isomerate, Ceramide Ng, Tocopherol, Niacinamide, Mangifera Indica Fruit Extract, Euterpe Oleracea Fruit Extract, Camellia Sinensis Leaf Extract, Pseudozyma Epicola/Camellia Japonica Seed Oil Ferment Extract Filtrate, Aloe Barbadensis Leaf Juice, Persea Gratissima Oil, Glycine Soja Oil, Simmondsia Chinensis Seed Oil, Argania Spinosa Kernel Oil, Xanthan Gum, Acacia Senegal Gum, Hydroxyacetophenone, Cetearyl Olivate, Caprylyl Glycol, Polyacrylate Crosspolymer-6, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Polyglyceryl-4 Laurate/Succinate, PEG-100 Stearate, Sorbitan Olivate, Cetearyl Glucoside, Hexylene Glycol, Ethoxydiglycol, Sodium Citrate, Tetrasodium Glutamate Diacetate, Sodium Metabisulfite, Phenoxyethanol, Ethylhexylglycerin, Potassium Sorbate, Sodium Benzoate, Citric Acid, Parfum, Limonene

Dicaprylyl Carbonate

Glycereth-26

Ammonium Acryloyldimethyltaurate/Beheneth-25 Methacrylate Crosspolymer

Hydrolyzed Jojoba Esters

Panthenol

Polyglyceryl-3 Methylglucose Distearate

Tetrahexyldecyl Ascorbate

Linoleic Acid

Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate

Linolenic Acid

Citrus Aurantium Dulcis Fruit Extract

Citrus Limon Fruit Extract

Hippophae Rhamnoides Extract

Lycium Barbarum Fruit Extract

Rosa Canina Fruit Extract

Leuconostoc/Radish Root Ferment Filtrate

Camellia Japonica Flower Extract

Aroma

Sodium Hyaluronate

Sodium Polyacrylate

Sodium Phytate

Hyaluronic Acid

Triacetin

Hydrolyzed Vegetable Protein

Ascorbic Acid

Linalool

Benzyl Alcohol

CI 15985

CI 19140

Water, Glycerin, Dicaprylyl Carbonate, Propanediol, Caprylic/Capric Triglyceride, 3-O-Ethyl Ascorbic Acid, Glycereth-26, Ammonium Acryloyldimethyltaurate/Beheneth-25 Methacrylate Crosspolymer, Hydrolyzed Jojoba Esters, Cetearyl Alcohol, Polyacrylate Crosspolymer-6, Hydroxyacetophenone, Panthenol, Polyglyceryl-3 Methylglucose Distearate, Tetrahexyldecyl Ascorbate, Linoleic Acid, Citric Acid, Phenoxyethanol, Parfum, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Xanthan Gum, Cetearyl Glucoside, Linolenic Acid, Citrus Aurantium Dulcis Fruit Extract, Citrus Limon Fruit Extract, Hippophae Rhamnoides Extract, Lycium Barbarum Fruit Extract, Rosa Canina Fruit Extract, Ethylhexylglycerin, Leuconostoc/Radish Root Ferment Filtrate, Sodium Citrate, Camellia Japonica Flower Extract, Aroma, Sodium Hyaluronate, Sodium Polyacrylate, Sodium Phytate, Hyaluronic Acid, Triacetin, Hydrolyzed Vegetable Protein, Ascorbic Acid, Tocopherol, Limonene, Linalool, Benzyl Alcohol, CI 15985, CI 19140

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Alternatives

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

3-O-Ethyl Ascorbic Acid is one of the most popular "stable" vitamin C derivatives in skincare.

Plain ascorbic acid is fantastic but notoriously fragile; it browns, oxidizes, and loses potency fast. So attaching an ethyl group to the third carbon of the molecule gives it some cool perks:

In a formula, it does the 3 classic vitamin C jobs: it acts as an antioxidant, helps brighten skin tone by inhibiting tyrosinase, and supports collagen.

The evidence is reasonably solid for a cosmetic ingredient; Liao and colleagues (2018) showed it's significantly more stable than ascorbic acid while still being effective.

A 2021 study by Zerbinati and colleagues tested a serum with 30% 3-O-ethyl-l-ascorbic acid and 1% lactic acid significantly increased collagen production, reduced UVB-induced DNA damage, and decreased melanin on a reconstructed pigmented skin model.

Typical real world usage sits around 0.5-5% (and 1-2% is common for daily serums).

Amounts up to 30% have been shown to be non-irritating on human skin samples, but two isolated cases reported allergic contact dermatitis so a patch test is sensible if you have reactive skin.

Caprylic/Capric Triglyceride (aka MCT Oil) is a lightweight emollient, solvent, and texture enhancer. It is considered a skin-softener by helping to prevent moisture loss.

Though it behaves like an oil, it is not technically one due to its chemical composition. One perk of this ingredient is that it is very stable, resistant to oxidation, and unlikely to go rancid.

In practice, that translates to a long shelf life and a consistently elegant skin feel.

While there is an assumption Caprylic Triglyceride can clog pores due to it being derived from coconut oil, there is no research supporting this. Just patch test if you have concerns.

Fractionated coconut oil and MCT Oil are both listed as Caprylic/Capric Triglyceride according to INCI. This is because INCI names are based on the ingredient’s final chemical composition and not its marketing name or source.

This ingredient is treated as the gold standard fungal acne safe oil. Even though it is coconut derived, the problematic lauric acid is stripped out.

This leaves just caprylic (C8) and capric (C10) acid. These chain lengths actually trend antifungal; a 2020 study found caprylic acid was enough to disrupt Malassezia furfur cell membrane, with a caprylic acid derivative damaging membrane structures at concentrations as low as 0.2%.

Cetearyl alcohol is a waxy mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is an emollient and emulsifier.

Despite having "alcohol" in its name, it has nothing to do with drying solvent alcohols; the FDA also allows "alcohol-free" products to contain fatty alcohols like this ingredient.

It plays several roles in a formula:

Typical use levels for this ingredient sit around 1-10% and the Cosmetic Ingredient Review Expert Panel has affirmed safety at concentrations up to 25% in leave-on products.

Multiple assessments have found it to be non-irritating and non-sensitizing to most people.

However, there have been some cases of allergic contact dermatitis in patients with chronically compromised skin barriers.

Cetearyl alcohol has a comedogenic rating of 2 and irritancy rating of 1. Both of these numbers come from the 1989 study that used rabbit ears; a "2" means mildly comedogenic and a "1" means low irritancy.

Here's the catch: rabbit skin is more sensitive than human skin and throws a lot of false positives. A 1996 reappraisal found that ingredients rated 1-2 in the rabbit ear tests are generally safe for humans.

Remember comedogenic ratings are unable to assess the entire formula of a product or how it will react on your skin. Just be sure to patch test if you are unsure about certain ingredients.

This ingredient is not fungal acne safe. Cetearyl alcohol is a fatty alcohol with chain lengths that fall within the range that Malassezia can metabolize.

A 2019 study has also observed Malassezia growth in the presence of this ingredient, confirming it to be not-fungal acne safe.

Cetearyl Glucoside is a sugar-based emulsifier. It is usually made by combining cetearyl alcohol and glucose.

Belonging to the aklyl polyglucoside (APG) family, Cetearyl Glucoside has a sugar "head" that loves water and a fatty "tail" that loves oil. This means it can shuffle oil and water into a stable and smooth emulsion.

Typical use levels are between 1-5% and this ingredient is considered to be non-irritating by the CIR Expert Panel Review.

Once applied, your skin's glucoside hydrolases breaks it down to the parent fatty alcohol and glucose. This is why this ingredient may not be fungal acne safe.

Citric Acid is an alpha hydroxy acid (AHA) naturally found in citrus fruits like oranges, lemons, and limes.

Like other AHAs, citric acid can exfoliate skin by breaking down the bonds that hold dead skin cells together. This helps reveal smoother and brighter skin underneath.

However, this exfoliating effect only happens at high concentrations (20%) which can be hard to find in cosmetic products.

Due to this, citric acid is usually included in small amounts as a pH adjuster. This helps keep products slightly more acidic and compatible with skin's natural pH.

In skincare formulas, citric acid can:

While it can provide some skin benefits, research shows lactic acid and glycolic acid are generally more effective and less irritating exfoliants.

Most citric acid used in skincare today is made by fermenting sugars (usually from molasses). This synthetic version is identical to the natural citrus form but easier to stabilize and use in formulations.

Rosacea skin has a lower threshold for acids generally, with 62.5% of rosacea subjects in one study reacting to lactic acid in a sting test. This is why we mark citric acid as a potential rosacea trigger.

However, this ingredient shows up as a pH adjuster or chelator at roughly 0.1-1% in many products. These low levels are unlikely to be an issue for rosacea skin and becomes a potential trigger at exfoliating concentrations (20%). Because everybody's skin is unique, we recommend a patch test if you are unsure.

Ethylhexylglycerin is created from glycerin. It is a multitasker ingredient that:

The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure to patch test if you are unsure.

Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations.

Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.

Topically, glycerin does several things at once:

Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3.

Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin.

This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products.

Just know very high concentrations (>40%) can feel tacky in low humidity.

Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.

Hydroxyacetophenone is a small phenolic molecule that earns its place in a formulas as an antioxidant and preservative booster.

As a phenol, it is able to neutralize free radicals to protect both the product and the skin from oxidative stress.

Though it can't kill microbes on its own, it works as a good supporting agent when combined with other preservatives like Phenoxyethanol or 1,2-Hexanediol.

This ingredient naturally occurs as piceol in Norwegian spruce needles (~0.4-1.1% dry weight and in cloudberries). Though the cosmetic-grade material is synthesized for purity and consistency.

You'll usually see it used at low levels and suppliers recommend up to 1% added to a water phase.

Safety testing was done at concentrations like 0.05% in SPF products and 0.5% in a Human Repeated Insult Patch Test. The safety evidence is assuring; this ingredient is safe for cosmetics in current use and also holds safety status as a food flavoring as well.

An honest caveat: the "soothing" and "anti-inflammatory" claims come mostly from supplier marketing rather than published clinical trials. The Cosmetic Ingredient Review's own literature search found no useful efficacy studies on this ingredient.

So the antioxidant and preservative-boosting roles are the well supported ones while the calming benefit is plausible but thinly evidenced.

Overall, this is a well-tolerated, low-irritation multitasker that quietly helps a formula stay fresh and stable.

Limonene is a fragrance that adds scent and taste to a formulation.

It's found in the peel oil of citrus fruits and other plants such as lavender and eucalyptus. The scent of limonene is generally described as "sweet citrus".

Limonene acts as an antioxidant, meaning it helps neutralize free radicals.

When exposed to air, oxidized limonene may sensitize the skin. Because of this, limonene is often avoided by people with sensitive skin.

The term 'fragrance' is not regulated in many countries. In many cases, it is up to the brand to define this term. For instance, many brands choose to label themselves as "fragrance-free" because they are not using synthetic fragrances. However, their products may still contain ingredients such as essential oils that are considered a fragrance.

Parfum is a catch-all term for an ingredient or more that is used to give a scent to products.

Also called "fragrance", this ingredient can be a blend of hundreds of chemicals or plant oils. This means every product with "fragrance" or "parfum" in the ingredients list is a different mixture.

For instance, Habanolide is a proprietary trade name for a specific aroma chemical. When used as a fragrance ingredient in cosmetics, most aroma chemicals fall under the broad labeling category of “FRAGRANCE” or “PARFUM” according to EU and US regulations.

The term 'parfum' or 'fragrance' is not regulated in many countries. In many cases, it is up to the brand to define this term.

For instance, many brands choose to label themselves as "fragrance-free" because they are not using synthetic fragrances. However, their products may still contain ingredients such as essential oils that are considered a fragrance by INCI standards.

One example is Calendula flower extract. Calendula is an essential oil that still imparts a scent or 'fragrance'.

Depending on the blend, the ingredients in the mixture can cause allergies and sensitivities on the skin. Some ingredients that are known EU allergens include linalool and citronellol.

Parfum can also be used to mask or cover an unpleasant scent.

The bottom line is: not all fragrances/parfum/ingredients are created equally. If you are worried about fragrances, we recommend taking a closer look at an ingredient. And of course, we always recommend speaking with a professional.

Phenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!).

It has a large spectrum of antimicrobial activity and especially effective bacteria, yeast, and mold while only having a weak effect on your skin's natural microbiome.

On a cellular level, it disrupts the cell membranes of microbes by poking holes that make the cell leak. This shuts down the chemical reactions the microbe needs to make energy so it can no longer survive.

Another perk of this ingredient is that it stays functional across a wide pH range (3-10).

You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin to Phenoxyethanol damages bacterial membranes as effectively as doubling the Phenoxyethanol concentration on its own.

Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU.

Safety-wise, the fear mongering does not hold up to the evidence. The EU's Scientific Committee on Consumer Safety and FDA consider it safe as a preservative at up to 1%, including for children of all ages.

Adverse systemic effects only showed up in animal studies at exposures roughly 200x higher than what people get from cosmetics. And despite its very widespread use, this ingredient is a rare sensitizer and allergic reactions are uncommon.

Polyacrylate Crosspolymer-6 is a texture enhancer and pH adjuster.

It is be used to thicken water-based products and create a gel-texture with a velvet feel.

One manufacturer claims this ingredient to have a pH range of 2-8 and to be biodegradable.

This ingredient is also known as Sepimax Zen.

Propanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.

It’s often used to:

Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.

Sodium Citrate is the sodium salts of citric acid. In skincare, it is used to alter pH levels and acts as a preservative.

Its main functions are to maintain the pH of a product and neutralize metal ions.

The acidity of our skin is maintained by our glands and skin biome; normal pH level of skin is slightly acidic (~4.75-5.5).

Being slightly acidic allows our skin to create an "acid mantle". This acid mantle is a thin barrier that protects our skin from bacteria and contaminants.

Tocopherol is a fat-soluble antioxidant known as Vitamin E.

You'll find this ingredient in the vast majority of skincare (for good reason). It works to neutralize free radicals, or unstable molecules generated by UV exposure, pollution, and other environmental stressors, before they can cause oxidative damage to your skin cells.

Topically applied tocopherol has been shown to protect against UV damage by ramping up the skin's own natural defense enzymes.

It also acts as a skin conditioning agent; some studies show that regular topical use can improve the skin's water-binding capacity over 2-4 weeks.

This ingredient is especially loved for being a team player. When combined with Vitamin C, the photoprotective effect of both ingredients roughly doubles and the combo also helps reduce UV-induced DNA damage.

This ingredient has some brightening potential but it's more of a prevention ingredient than spot-fader. Cell studies show it can slow down melanin production but it's worth noting that it's not the most powerful brightener out there.

In formulations, it also serves as a stabilizer that helps protect other oxidation-prone ingredients from degrading.

Concentrations usually range from 0.1-1% in most leave-on products.

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.

You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Remember to stay hydrated!

Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.

On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.

Xanthan gum is a pretty common and great ingredient. It is a natural, non-toxic, non-irritating ingredient that is also commonly used in food products.

Similar Comparisons

SUPPLEMENTAL FIELD FILE

Notes to carry forward.

Source-derived references linked through this guide’s public topic markers.

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SOURCE SHELF

Research notes & excerpts

RESEARCH

Research Models and Methodology Behind the Claims

Understanding how the underlying studies were done is essential to weighting them, because the model determines what a result can and cannot mean. The GHK-Cu collagen literature rests heavily on cell-culture models: primary human dermal fibroblasts (or, in some studies, irradiated or aged fibroblasts) exposed to defined peptide concentrations, with readouts such as collagen and elastin protein, hydroxyproline content, MMP/TIMP gene and protein expression, and proliferation.3,4 The strength of this design is mechanistic control — you can isolate a concentration-response curve. Its limitation is that a monolayer of fibroblasts bathed in peptide is a radically simplified stand-in for intact, vascularized, immunologically active human skin. Effects that appear at 10-9 M in a dish may never be reproduced by an injected or topical dose in vivo, where absorption, distribution, protein binding, and clearance all intervene. The cosmetic clinical studies use a different methodology: human volunteers apply a topical GHK-Cu formulation, and outcomes are assessed by instrumental skin imaging (wrinkle volume/depth, skin density by ultrasound, elasticity) over weeks.4,13 These are genuine human data and closer to a real endpoint, but they carry their own caveats: small sample sizes, cosmetic (appearance) rather than histological (biopsy-confirmed collagen) endpoints in many cases, frequent industry sponsorship, formulation-specific results (a particular cream or nanocarrier, not the peptide in isolation), and short durations. A wrinkle-imaging improvement is a legitimate cosmetic outcome but a weak proxy for “enhanced collagen synthesis pathways” at the tissue level. The BPC-157 and TB-500 evidence leans even more heavily on animal models: rodent tendon, muscle, gut, and skin-wound experiments, plus ex-vivo tissue explants and cell-migration assays.5,8,9 Rodent wound-healing models are informative for hypothesis generation but notoriously over-optimistic as predictors of human efficacy; rodent skin heals differently from human skin (more contraction, looser attachment), and the injury contexts studied (acute surgical or chemical wounds) differ from the chronic, low-grade “aging” context that skin-collagen marketing invokes. The methodological distance between “Tβ4 accelerated closure of a full-thickness rat wound” and “an injected blend increases collagen in healthy adult human dermis” is very large. Two systematic methodological red flags recur across this field. First is publication and author concentration: much of the BPC-157 literature originates from a small number of research groups, and independent replication is limited — a pattern reviewers explicitly flag when cautioning against over-reading the animal data.9,10 Second is the gap between surrogate and clinical endpoints. Many “positive” findings are early surrogate markers — mRNA levels, phosphorylation states, histology scores — rather than the outcomes a person would notice. Surrogate markers frequently fail to translate into clinical benefit, and the history of dermatology and regenerative medicine is littered with in-vitro “collagen boosters” that did nothing measurable in controlled human trials. The methodological bottom line for Glow specifically is that the blend has never been the subject of any of these study types. There is no cell-culture study of the three peptides combined, no animal study of the blend, and no human study. So even the modest, model-limited evidence that exists for the parts cannot be assumed to carry over, because combination effects (synergy, antagonism, altered stability, competition for uptake or copper) are precisely the things that single-agent studies cannot capture. The methodology supporting Glow’s headline claim is, in the strictest sense, not the study of Glow at all.

Source trail · dosagepeptide.com →
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PROVISION SHELF

Products & side-by-side records