Kiehl's Powerful-Strength Vitamin C Serum Versus Estée Lauder Advanced Night Repair Rescue Solution Serum With 15% Bifidus Ferment

Kiehl's Powerful-Strength Vitamin C Serum Versus Estée Lauder Advanced Night Repair Rescue Solution Serum With 15% Bifidus Ferment

This anti-aging serum is formulated around Ascorbic Acid and Ascorbyl Glucoside to soften the look of wrinkles and brighten dull-looking skin.

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

Propylene Glycol

Dimethicone

Glycerin

Ascorbic Acid

Ethylhexyl Palmitate

Cetyl PEG/PPG-10/1 Dimethicone

Dimethicone Crosspolymer

Ascorbyl Glucoside

Cyclohexasiloxane

Hydroxyethylpiperazine Ethane Sulfonic Acid

Lauroyl Lysine

Acrylonitrile/Methyl Methacrylate/Vinylidene Chloride Copolymer

Polysilicone-11

Adenosine

Hydrolyzed Hyaluronic Acid

Limonene

Isobutane

Citrus Aurantium Dulcis Peel Oil

Citrus Limon Peel Oil

Citral

Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate

Propylene Glycol, Dimethicone, Glycerin, Ascorbic Acid, Ethylhexyl Palmitate, Cetyl PEG/PPG-10/1 Dimethicone, Dimethicone Crosspolymer, Ascorbyl Glucoside, Cyclohexasiloxane, Hydroxyethylpiperazine Ethane Sulfonic Acid, Lauroyl Lysine, Acrylonitrile/Methyl Methacrylate/Vinylidene Chloride Copolymer, Polysilicone-11, Adenosine, Hydrolyzed Hyaluronic Acid, Limonene, Isobutane, Citrus Aurantium Dulcis Peel Oil, Citrus Limon Peel Oil, Citral, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate

Water

Bifida Ferment Filtrate

PEG-8

Butylene Glycol

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

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.

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.

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