Peptide Skincare & BeautySkin science and ingredient guides

Skin science article

Skinfix Barrier+ Triple Lipid-Peptide Cream Versus Glow Recipe Plum Plump Hyaluronic Cream

Skinfix Barrier+ Triple Lipid-Peptide Cream Versus Glow Recipe Plum Plump Hyaluronic Cream This barrier-repair moisturizer is formulated around Butyrospermum Parkii Butter and Ceramide NP to strengthen the skin barrier and hydrate skin. This barrier-repair moi

Skinfix Barrier+ Triple Lipid-Peptide Cream Versus Glow Recipe Plum Plump Hyaluronic Cream

This barrier-repair moisturizer is formulated around Butyrospermum Parkii Butter and Ceramide NP to strengthen the skin barrier and hydrate skin.

This barrier-repair moisturizer is formulated around Hyaluronic Acid and Polyglutamic Acid to strengthen the skin barrier and hydrate skin.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Caprylic/Capric Triglyceride

Glycerin

Butyrospermum Parkii Butter

Olus Oil

Cetyl Lactate

Propanediol

C12-16 Alcohols

Caprylyl Caprylate/Caprate

Jojoba Oil/Macadamia Seed Oil Esters

Glyceryl Stearate Citrate

Palmitic Acid

Hydrogenated Lecithin

Oryza Sativa Bran Extract

Dilinoleic Acid/Propanediol Copolymer

Squalene

Ophiopogon Japonicus Root Extract

Xanthan Gum

Phytosteryl Sunflowerseedate

Glycine Soja Extract

Pentylene Glycol

Ceramide NP

Ceramide AP

Ceramide EOP

Hydrolyzed Rice Protein

Chondrus Crispus Extract

Hydrogenated Vegetable Glycerides

Helianthus Annuus Extract

Sodium Hyaluronate

Citric Acid

Phytosteryl Macadamiate

Tocopherol

Rosmarinus Officinalis Leaf Extract

Aloe Barbadensis Leaf Juice

Trisodium Ethylenediamine Disuccinate

Phytosterols

Sodium Lauroyl Lactylate

Gluconolactone

Phenethyl Alcohol

Phytosphingosine

Cholesterol

Carbomer

Potassium Sorbate

Ethylhexylglycerin

Sodium Benzoate

Phenoxyethanol

Water, Caprylic/Capric Triglyceride, Glycerin, Butyrospermum Parkii Butter, Olus Oil, Cetyl Lactate, Propanediol, C12-16 Alcohols, Caprylyl Caprylate/Caprate, Jojoba Oil/Macadamia Seed Oil Esters, Glyceryl Stearate Citrate, Palmitic Acid, Hydrogenated Lecithin, Oryza Sativa Bran Extract, Dilinoleic Acid/Propanediol Copolymer, Squalene, Ophiopogon Japonicus Root Extract, Xanthan Gum, Phytosteryl Sunflowerseedate, Glycine Soja Extract, Pentylene Glycol, Ceramide NP, Ceramide AP, Ceramide EOP, Hydrolyzed Rice Protein, Chondrus Crispus Extract, Hydrogenated Vegetable Glycerides, Helianthus Annuus Extract, Sodium Hyaluronate, Citric Acid, Phytosteryl Macadamiate, Tocopherol, Rosmarinus Officinalis Leaf Extract, Aloe Barbadensis Leaf Juice, Trisodium Ethylenediamine Disuccinate, Phytosterols, Sodium Lauroyl Lactylate, Gluconolactone, Phenethyl Alcohol, Phytosphingosine, Cholesterol, Carbomer, Potassium Sorbate, Ethylhexylglycerin, Sodium Benzoate, Phenoxyethanol

C13-15 Alkane

C9-12 Alkane

Prunus Domestica Seed Oil

Squalane

Terminalia Ferdinandiana Seed Oil

Hyaluronic Acid

Sodium Acetylated Hyaluronate

Davidsonia Jerseyana Fruit Extract

Terminalia Ferdinandiana Fruit Powder

Podocarpus Elatus Fruit Extract

Polyglutamic Acid

Pleiogynium Timoriense Fruit Extract

Sodium Hyaluronate Crosspolymer

Hydrolyzed Sodium Hyaluronate

Epilobium Fleischeri Flower/Leaf/Stem Extract

Niacinamide

Acrylates/C10-30 Alkyl Acrylate Crosspolymer

Xylitylglucoside

Isononyl Isononanoate

Caprylyl Glycol

Anhydroxylitol

Cetearyl Alcohol

Glyceryl Stearate

Arginine

Sodium Chloride

Xylitol

Stearic Acid

Tremella Fuciformis Polysaccharide

Sodium Lauroyl Glutamate

Eclipta Prostrata Extract

Glucose

Potassium Phosphate

Butylene Glycol

Melia Azadirachta Leaf Extract

Hydroxypropylcellulose

Alaria Esculenta Extract

Sodium Phosphate

Potassium Chloride

Melia Azadirachta Flower Extract

Corallina Officinalis Extract

1,2-Hexanediol

Moringa Oleifera Seed Oil

Coccinia Indica Fruit Extract

Solanum Melongena Fruit Extract

Aloe Barbadensis Flower Extract

Simmondsia Chinensis Seed Oil

Curcuma Longa Root Extract

Ocimum Basilicum Flower/Leaf Extract

Ocimum Sanctum Leaf Extract

Silica

Sodium Hydroxide

Parfum

Water, Propanediol, Glycerin, C13-15 Alkane, Caprylic/Capric Triglyceride, C9-12 Alkane, Prunus Domestica Seed Oil, Pentylene Glycol, Squalane, Terminalia Ferdinandiana Seed Oil, Hyaluronic Acid, Sodium Acetylated Hyaluronate, Sodium Hyaluronate, Davidsonia Jerseyana Fruit Extract, Terminalia Ferdinandiana Fruit Powder, Podocarpus Elatus Fruit Extract, Polyglutamic Acid, Pleiogynium Timoriense Fruit Extract, Sodium Hyaluronate Crosspolymer, Hydrolyzed Sodium Hyaluronate, Epilobium Fleischeri Flower/Leaf/Stem Extract, Niacinamide, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Xylitylglucoside, Isononyl Isononanoate, Caprylyl Glycol, Anhydroxylitol, Cetearyl Alcohol, Glyceryl Stearate, Arginine, Ethylhexylglycerin, Sodium Chloride, Xylitol, Stearic Acid, Tremella Fuciformis Polysaccharide, Sodium Lauroyl Glutamate, Eclipta Prostrata Extract, Glucose, Potassium Phosphate, Butylene Glycol, Melia Azadirachta Leaf Extract, Hydroxypropylcellulose, Alaria Esculenta Extract, Sodium Phosphate, Potassium Chloride, Melia Azadirachta Flower Extract, Corallina Officinalis Extract, 1,2-Hexanediol, Moringa Oleifera Seed Oil, Coccinia Indica Fruit Extract, Citric Acid, Potassium Sorbate, Solanum Melongena Fruit Extract, Aloe Barbadensis Flower Extract, Gluconolactone, Simmondsia Chinensis Seed Oil, Curcuma Longa Root Extract, Ocimum Basilicum Flower/Leaf Extract, Ocimum Sanctum Leaf Extract, Silica, Sodium Hydroxide, Sodium Benzoate, Phenoxyethanol, Parfum

Reviews

Alternatives

Ingredients Explained

These ingredients are found in both products.

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

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%.

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.

Gluconolactone is a PHA. PHAs are a great gentle alternative to traditional AHAs.

When applied, Gluconolactone has the same affect on skin as AHAs such as lactic acid. It helps dissolve the dead skin cells in the top layer of your skin. This improves texture and brightens the skin.

PHAs are more gentle than AHAs due to their larger structure. They do not penetrate as deeply as AHAs and take a longer time to dissolve dead cells. Studies show PHAs do not cause as much irritation.

Gluconolactone has some interesting properties:

In a 2004 study, Gluconolactone was found to prevent UV damage in mouse skin cells and has not been found to increase sun sensitivity. However, we still recommend wearing SPF daily.

This ingredient is is an created by reacting gluconic acid with an alcohol.

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.

Pentylene Glycol (1,2-pentanediol) is a multitasking little diol with three main roles in a formula:

Research on alkanediols (the family pentylene glycol belongs to) show they work by disrupting microbial cell membranes. This disruption helps the primary preservative system in a product work more effectively at lower doses.

On the safety side, the Cosmetic Ingredient Review Expert Panel has concluded this ingredient to be safe as used in current cosmetic practices + concentrations.

Typical use levels in a formula run about 1-5%.

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.

Potassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.

This ingredient comes from potassium salt derived from sorbic acid. Sorbic acid is a natural antibiotic and effective against fungus.

Both potassium sorbate and sorbic acid can be found in baked goods, cheeses, dried meats, dried fruit, ice cream, pickles, wine, yogurt, and more.

You'll often find this ingredient used with other preservatives.

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 Benzoate is a preservative. It's used in both cosmetic and food products to inhibit the growth of mold and bacteria. It is typically produced synthetically.

Both the US FDA and EU Health Committee have approved the use of sodium benzoate. In the US, levels of 0.1% (of the total product) are allowed.

Sodium benzoate works as a preservative by inhibiting the growth of bacteria inside of cells. It prevents the cell from fermenting a type of sugar using an enzyme called phosphofructokinase.

It is the salt of benzoic acid. Foods containing sodium benzoate include soda, salad dressings, condiments, fruit juices, wines, and snack foods.

Studies for using ascorbic acid and sodium benzoate in cosmetics are lacking, especially in skincare routines with multiple steps.

We always recommend speaking with a professional, such as a dermatologist, if you have any concerns.

Sodium Hyaluronate is the salt form of hyaluronic acid. It is a long sugar chain that is naturally found in your skin, joints, and connective tissue that maintains hydration and elasticity.

In skincare, it works as a humectant. It pulls water from the environment and deeper layers of skin and binds it to the surface.

Interestingly, the size of the molecule affects its behavior:

Some clinical evidence links low molecular weight versions to improved wrinkle depth, elasticity, anti-inflammatory effects, and barrier repair.

Many serums use a blend of both weights so you can get surface hydration plus longer-lasting and deeper effects.

You'll typically see concentrations between 0.1-2% for this ingredient.

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!

Similar Comparisons

The reference edit

Ingredients, questions
& further reading.

Connected source records selected through this article’s public topic index.

01

Formula cabinet

Ingredients & structured notes

Ingredient index

Ingredients Side-by-side

  1. 01Water
  2. 02Caprylic/Capric Triglyceride
  3. 03Glycerin
  4. 04Butyrospermum Parkii Butter
  5. 05Olus Oil
  6. 06Cetyl Lactate
  7. 07Propanediol
  8. 08C12-16 Alcohols
  9. 09Caprylyl Caprylate/Caprate
  10. 10Jojoba Oil/Macadamia Seed Oil Esters
  11. 11Glyceryl Stearate Citrate
  12. 12Palmitic Acid
  13. 13Hydrogenated Lecithin
  14. 14Oryza Sativa Bran Extract
  15. 15Dilinoleic Acid/Propanediol Copolymer
  16. 16Squalene
  17. 17Ophiopogon Japonicus Root Extract
  18. 18Xanthan Gum
  19. 19Phytosteryl Sunflowerseedate
  20. 20Glycine Soja Extract
Source · skinsort.com
02

Product index

Related product references

03

Comparison edit

Read side by side