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Skin science article

Paula's Choice Resist Barrier Repair Moisturizer with Retinol Versus Clinique Moisture Surge 72-Hour Auto-Replenishing Hydrator

Paula's Choice Resist Barrier Repair Moisturizer with Retinol Versus Clinique Moisture Surge 72-Hour Auto-Replenishing Hydrator This barrier-repair moisturizer is formulated around Retinol and Ceramide NP to strengthen the skin barrier and soften the look of w

Paula's Choice Resist Barrier Repair Moisturizer with Retinol Versus Clinique Moisture Surge 72-Hour Auto-Replenishing Hydrator

This barrier-repair moisturizer is formulated around Retinol and Ceramide NP to strengthen the skin barrier and soften the look of wrinkles.

This barrier-repair moisturizer is formulated around Sodium Hyaluronate to strengthen the skin barrier and hydrate skin.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Dicaprylyl Carbonate

Glycerin

Ethylhexyl Stearate

Cocoglycerides

Butyrospermum Parkii Butter

Squalane

Sodium Polyacrylate

Lecithin

Adenosine

Palmitoyl Tripeptide-1

Ceramide NP

Retinol

Punica Granatum Extract

Camellia Oleifera Leaf Extract

Glycyrrhiza Glabra Root Extract

Tetrahydrodiferuloylmethane

Tetrahydrodemethoxydiferuloylmethane

Tetrahydrobisdemethoxydiferuloylmethane

Tocopheryl Acetate

Chamomilla Recutita Flower Extract

Glycine Soja Seed Extract

Glycine Soja Oil

Butylene Glycol

Propylene Glycol

Glyceryl Polymethacrylate

Xanthan Gum

Phenoxyethanol

Water, Dicaprylyl Carbonate, Glycerin, Ethylhexyl Stearate, Cocoglycerides, Butyrospermum Parkii Butter, Squalane, Sodium Polyacrylate, Lecithin, Adenosine, Palmitoyl Tripeptide-1, Ceramide NP, Retinol, Punica Granatum Extract, Camellia Oleifera Leaf Extract, Glycyrrhiza Glabra Root Extract, Tetrahydrodiferuloylmethane, Tetrahydrodemethoxydiferuloylmethane, Tetrahydrobisdemethoxydiferuloylmethane, Tocopheryl Acetate, Chamomilla Recutita Flower Extract, Glycine Soja Seed Extract, Glycine Soja Oil, Butylene Glycol, Propylene Glycol, Glyceryl Polymethacrylate, Xanthan Gum, Phenoxyethanol

Dimethicone

Trisiloxane

Trehalose

Sucrose

Ammonium Acryloyldimethyltaurate/Vp Copolymer

Hydroxyethyl Urea

Camellia Sinensis Leaf Extract

Silybum Marianum Extract

Betula Alba Bark Extract

Saccharomyces Lysate Extract

Aloe Barbadensis Leaf Water

Thermus Thermophillus Ferment

Caffeine

Sorbitol

Palmitoyl Hexapeptide-12

Sodium Hyaluronate

Caprylyl Glycol

Oleth-10

Sodium Polyaspartate

Saccharide Isomerate

Hydrogenated Lecithin

Acrylates/C10-30 Alkyl Acrylate Crosspolymer

Tromethamine

PEG-8

Hexylene Glycol

Magnesium Ascorbyl Phosphate

Disodium EDTA

BHT

CI 14700

CI 19140

Water, Dimethicone, Butylene Glycol, Glycerin, Trisiloxane, Trehalose, Sucrose, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Hydroxyethyl Urea, Camellia Sinensis Leaf Extract, Silybum Marianum Extract, Betula Alba Bark Extract, Saccharomyces Lysate Extract, Aloe Barbadensis Leaf Water, Thermus Thermophillus Ferment, Caffeine, Sorbitol, Palmitoyl Hexapeptide-12, Sodium Hyaluronate, Caprylyl Glycol, Oleth-10, Sodium Polyaspartate, Saccharide Isomerate, Hydrogenated Lecithin, Tocopheryl Acetate, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Glyceryl Polymethacrylate, Tromethamine, PEG-8, Hexylene Glycol, Magnesium Ascorbyl Phosphate, Disodium EDTA, BHT, Phenoxyethanol, CI 14700, 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.

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.

Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.

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.

This is a synthetic polymer made by combining glycerin with polymethacrylic acid.

It is a non-drying, non-greasy moisturizer that helps enhance the feel and slip of formulations, helps stabilize emulsions, creates a film, and controls viscosity.

As a film former, it creates a light and flexible layer on the skin's surface. This helps lock in moisture without feeling heavy.

It's typically used at concentrations up to 1.9% in leave-on products. CIR has concluded that these ingredients are safe in cosmetics at current use levels.

Due to its large molecule size, it doesn't readily penetrate into skin and mostly just sits on the surface. A large UK-based patch test study of over 1,300 patients found that sensitization to related acrylate copolymers is rare.

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.

Tocopheryl Acetate is a stable, shelf-friendly form of vitamin E.

Formulators love it because plain vitamin E oxidizes quickly once it hits air. This acetate version stays stable and resists going off, helping to extend a product's shelf life.

It's actually inactive on its own and works like a slow-release "storage" form; the enzymes in your skin called esterases gradually convert it into active vitamin E over time.

One in vivo study showed 5% of the acetate in the living layer of the epidermis converted to vitamin E after 5 days of application. This study also found the skin gained protection against UV damage even though the conversion was slow and small.

Once converted, vitamin E acts as a skin's main fat-soluble antioxidant that fights free radicals to protect skin from damage.

Topical vitamin E generally boosts the skin's photoprotection, and it reduced UV-damage in animal models.

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.

Overall, it has a pretty solid safety profile and has been found to be non-irritating and non-comedogenic. Allergic reactions may happen but stay rare due to how widely the ingredient gets used.

The concentration will vary depending on the formula; industry data shows 0.1% in baby lotions, 3% in lipsticks, and 5% in foot powders. You can also find this ingredient at 100% in a pure vitamin E oil.

Most leave-on skincare keeps it at the lower end, often between 0.5-1%.

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!

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The reference edit

Ingredients, questions
& further reading.

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

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Formula cabinet

Ingredients & structured notes

Ingredient index

Paula's Choice Skin Recovery Softening Cream CleanserIngredients explained

  1. 01Good old water, aka H2O. The most common skincare ingredient of all. You can usually find it right in the very first spot of the ingredient list, meaning it’s the biggest thing out of all the stuff that makes up the product.
  2. 02It’s mainly a solvent for ingredients that do not like to dissolve in oils but rather in water.
  3. 03Expand to read more
  4. 04Once inside the skin, it hydrates, but not from the outside - putting pure water on the skin (hello long baths!) is drying.
  5. 05One more thing: the water used in cosmetics is purified and deionized (it means that almost all of the mineral ions inside it is removed). Like this, the products can stay more stable over time.
  6. 06A hydrocarbon-based emollient that can come in different viscosities from silky-light through satiny-smooth to luxurious, rich. It forms a non-occlusive film on the surface of the skin and brings gloss without greasiness to the formula. It's a very …
  7. 07A soft, mild cleansing agent with amphoteric structure meaning that its head contains both a positively and a negatively charged part (surfactants are most commonly anionic meaning their head has a negative charge). It also has great foaming abiliti…
  8. 08The emollient plant oil coming from the soybean. It is considered to be a nice, cost-effective base oil with moisturizing properties. As for its fatty acid profile, it contains 48-59% barrier-repairing linoleic acid, 17-30% nourishing oleic acid and…
  9. 09An often used emollient with a light and silky feel. It's very mild to both skin and eyes and spreads nicely and easily. It's often used in sunscreens as it's also an excellent solvent for sunscreen agents.
  10. 10A common little helper ingredient that helps water and oil to mix together, aka emulsifier.
  11. 11The number at the end refers to the oil-loving part and the bigger the number the more emulsifying power it has. 20 is a weak emulsifier, rather called solubilizer used commonly in toners while 60 and 80 are more common in serums and creams.
  12. 12We don't have description for this ingredient yet.
  13. 13Though its long name does not reveal it, this polymer molecule (big molecule from repeated subunits or monomers) is a relative to the super common, water-loving thickener, Carbomer. Both of them are big molecules that contain acrylic acid units, but…
  14. 14This means that our molecule is part water- and part oil-loving, so it not only works as a thickener but also as an emulsion stabilizer. It is very common in gel-type formulas that also contain an oil-phase as well as in cleansers as it also works w…
  15. 15Super common ingredient in all kinds of cleansing products: face and body washes, shampoos and foam baths.
  16. 16Number one reason for its popularity has to do with bubbles. Everyone loves bubbles. And cocamidopropyl betaine is great at stabilizing them.
  17. 17The other reason is that it’s mild and works very well combined with other cleansing agents and surfactants. The art of cleansing is usually to balance between properly cleansing but not over-cleansing and cocamidopropyl betaine is helpful in pullin…
  18. 18Oh, and one more nice thing: even though it’s synthetic it’s highly biodegradable.
  19. 19More info on CAPB on Collins Beaty Pages.
  20. 20Chamomile probably needs no introduction as it's one of the most widely used medicinal herbs. You probably drink it regularly as a nice, calming cup of tea and it's also a regular on skincare ingredient lists.
Source · incidecoder.com
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