Clinique Smart Clinical Repair Wrinkle Correcting Serum Versus Estée Lauder Advanced Night Repair Rescue Solution Serum With 15% Bifidus Ferment

Clinique Smart Clinical Repair Wrinkle Correcting Serum Versus Estée Lauder Advanced Night Repair Rescue Solution Serum With 15% Bifidus Ferment

This anti-aging serum is formulated around Acetyl Hexapeptide-8 and Palmitoyl Tripeptide-1 to soften the look of wrinkles and refine skin texture.

This calming serum is formulated around Bifida Ferment Filtrate and Resveratrol to calm redness and strengthen the skin barrier.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Dimethicone

Isododecane

Butylene Glycol

Glycerin

Polysilicone-11

Ascorbyl Glucoside

Sodium Hyaluronate

Tocopheryl Acetate

Squalane

Hypnea Musciformis Extract

Gelidiella Acerosa Extract

Sigesbeckia Orientalis Extract

Helianthus Annuus Seed Extract

Hordeum Vulgare Extract

Triticum Vulgare Germ Extract

Cucumis Sativus Fruit Extract

Caffeine

Acetyl Hexapeptide-8

Palmitoyl Tripeptide-1

Palmitoyl Tetrapeptide-7

Palmitoyl Hexapeptide-12

PEG-10 Dimethicone

Glycyrrhetinic Acid

Whey Protein

Isohexadecane

Propylene Glycol Dicaprate

Caprylyl Glycol

Hydroxypinacolone Retinoate

Acetyl Glucosamine

Cholesterol

PEG-8

Faex Extract

PEG-6

Dimethyl Isosorbide

Glyceryl Polymethacrylate

Polysorbate 20

Sodium Phosphate

Synthetic Fluorphlogopite

Polysorbate 80

Carbomer

Hexylene Glycol

Ammonium Acryloyldimethyltaurate/Vp Copolymer

Acrylamide/Sodium Acryloyldimethyltaurate Copolymer

Potassium Hydroxide

Tin Oxide

Disodium Phosphate

Citric Acid

Disodium EDTA

Sodium Citrate

Phenoxyethanol

Potassium Sorbate

CI 77891

Water, Dimethicone, Isododecane, Butylene Glycol, Glycerin, Polysilicone-11, Ascorbyl Glucoside, Sodium Hyaluronate, Tocopheryl Acetate, Squalane, Hypnea Musciformis Extract, Gelidiella Acerosa Extract, Sigesbeckia Orientalis Extract, Helianthus Annuus Seed Extract, Hordeum Vulgare Extract, Triticum Vulgare Germ Extract, Cucumis Sativus Fruit Extract, Caffeine, Acetyl Hexapeptide-8, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, Palmitoyl Hexapeptide-12, PEG-10 Dimethicone, Glycyrrhetinic Acid, Whey Protein, Isohexadecane, Propylene Glycol Dicaprate, Caprylyl Glycol, Hydroxypinacolone Retinoate, Acetyl Glucosamine, Cholesterol, PEG-8, Faex Extract, PEG-6, Dimethyl Isosorbide, Glyceryl Polymethacrylate, Polysorbate 20, Sodium Phosphate, Synthetic Fluorphlogopite, Polysorbate 80, Carbomer, Hexylene Glycol, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Acrylamide/Sodium Acryloyldimethyltaurate Copolymer, Potassium Hydroxide, Tin Oxide, Disodium Phosphate, Citric Acid, Disodium EDTA, Sodium Citrate, Phenoxyethanol, Potassium Sorbate, CI 77891

Bifida Ferment Filtrate

Bis-PEG-18 Methyl Ether Dimethyl Silane

Tripeptide-32

Hydrolyzed Yeast Protein

Lactobacillus Ferment

Citrullus Lanatus Fruit Extract

Lens Esculenta Fruit Extract

Pyrus Malus Fruit Extract

Magnolia Officinalis Bark Extract

Resveratrol

Poria Cocos Sclerotium Extract

Silybum Marianum Fruit Extract

Sapindus Mukorossi Fruit Extract

Anthemis Nobilis Flower Extract

Sodium Lactate

Ethylhexylglycerin

Potassium Gluconate

Sodium PCA

Caesalpinia Spinosa Gum

Sucrose

Xanthan Gum

PPG-6-Decyltetradeceth-30

PPG-5-Ceteth-20

BHT

Sodium Hydroxide

Sodium Benzoate

CI 14700

CI 19140

Water, Bifida Ferment Filtrate, PEG-8, Butylene Glycol, Glycerin, Polysorbate 80, Bis-PEG-18 Methyl Ether Dimethyl Silane, Tripeptide-32, Hydrolyzed Yeast Protein, Lactobacillus Ferment, Sodium Hyaluronate, Caffeine, Hypnea Musciformis Extract, Citrullus Lanatus Fruit Extract, Lens Esculenta Fruit Extract, Pyrus Malus Fruit Extract, Magnolia Officinalis Bark Extract, Resveratrol, Poria Cocos Sclerotium Extract, Silybum Marianum Fruit Extract, Sapindus Mukorossi Fruit Extract, Anthemis Nobilis Flower Extract, Sodium Lactate, Ethylhexylglycerin, Potassium Gluconate, Sodium PCA, Caesalpinia Spinosa Gum, Sucrose, Caprylyl Glycol, Hexylene Glycol, Carbomer, Xanthan Gum, PPG-6-Decyltetradeceth-30, PPG-5-Ceteth-20, BHT, Disodium EDTA, Sodium Hydroxide, Potassium Sorbate, Phenoxyethanol, Sodium Benzoate, 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.

Caffeine is a naturally occurring plant compound found in coffee beans, tea leaves, cocoa pods, and guarana.

As an antioxidant, caffeine protects your skin from free radical damage caused by UV exposure and envionrmnetal stressors.

Early research also shows that caffeine can help calm redness, soothe irritated skin, and support hair growth by stimulating microcirculation in the scalp.

You might have seen eye creams marketing caffeine as a depuffing ingredient. This is because it is a vasoconstrictor meaning it can temporarily constrict blood vessels, though clinical evidence for this specific use is still limited.

Most skincare products contain this ingredient at concentrations between 1-6%. It is able to penetrate skin easily regardless of skin type or thickness.

Just so you know, a very small number of case reports describe caffeine-induced allergy. This ingredient is generally well-tolerated, non-irritating, and non-sensitizing for the majority of people.

Caprylyl Glycol is a humectant, skin conditioner, emollient, and preservative booster derived from either caprylic acid or synthetically created.

Typical use levels vary from 0.3-1% as a preservative booster and go up to 2% to condition skin.

Because it is not a free-fatty acid, this ingredient is fungal acne safe (there's nothing for Malassezia to feed on).

Carbomer is a synthetic thickening and gelling agent. It's basically the ingredient that gives a lot of serums, gels, creams, and sunscreens their smooth, non-sticky texture.

Although legally permitted at very high levels, carbomers are normally used at concentrations below 1%.

It also needs to be neutralized to actually thicken, and because it is a large molecule, it doesn't really penetrate the skin barrier.

Allergy-wise, the risk is very low. Clinical studies show carbomers have low potential for skin irritation/sensitization even at concentrations up to 100%.

A 2024 UK study patch-tested 1,302 patients and found true allergy to the parent group of carbomer to be rare with no confirmed relevant reactions.

Disodium EDTA is a chelating agent. It grabs onto and deactivates metal ions that sneak into your products from water, packaging, or air.

This ingredient mainly works behind the scenes and helps with:

On top of that, this ingredient can counteract the effects of hard water by binding to the minerals in it.

One thing worth knowing is that Disodium EDTA has been shown to be a mild penetration enhancer. It can help other ingredients absorb into skin more effectively which can be a double-edged sword (great for actives, but can also make the active too strong if you have sensitive skin).

Clinical patch testing showed no significant skin irritation at typical use concentrations and minimal dermal absorption.

You'll most likely see this ingredient near the end of an ingredient list. It's typically found in concentrations less than 1%.

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.

Hexylene Glycol is a multitasker ingredient that works as a solvent, humectant, emulsifier, viscosity reducer, and preservative booster.

It is able to dissolve both water and oil-soluble ingredients to stabilize tricky actives and make products spread more easily.

As a humectant, it pulls water into the skin. But it's a pretty minor moisturizing ingredient compared to other humectants, like glycerin.

Interestingly, it can act as a mild penetration enhancer. One in vitro study on human skin found a 12% concentration upped the absorption of mometasone furoate (a medicinal ingredient used to treat inflammatory skin conditions) up to 7%.

This ingredient is typically used at levels of 0.1-10% depending on the role it's playing.

A patch test study on eczema patients didn't find a significant increase in irritation versus the control group, but the potential for irritation rises at higher concentrations.

Hypnea Musciformis Extract comes from the red algae called Hypnea musciformis. Hypnea Musciformis is commonly found in the Atlantic, Pacific, and Indian Oceans.

The cell walls of Hypnea Musciformis is rich in carrageenan.

Hypnea Musciformis Extract contains vitamins A, C, and E. It also has calcium, magnesium, sodium, potassium, and iron.

PEG-8 is a synthetic polymer used as a humectant and solvent.

This ingredient is able to help dissolve active ingredients, including water. This gives it humectant properties.

It is soluble in water. The number '8' stands for the molecular weight of the ingredient.

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.

Polysorbate 80 is a synthetic surfactant and emulsifier derived from sorbitol and oleic acid.

It reduces the surface tension between oil and water phases to help them stay mixed and stable in a formulation. In other words, it prevents your formulas from separating into an oily mess.

The CIR Expert Panel has evaluated the scientific data and found this ingredient to be safe, non-irritating, and non-sensitizing at concentrations up to 5% (it's even approved by the FDA as an OTC eye drop ingredient).

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.

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!

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