Kiehl's Age Defender Power Serum Versus Jack Black Protein Booster Skin Serum
Overview
What they are
These products are both reef safe serums. They have a total of 7 ingredients in common
Cool Features
They both contain Vitamin E
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin, reducing pores and scar healing
Free From
They both do not contain any parabens or sulfates
What's Inside
They both contain harsh alcohols, common allergens, fragrances and oils
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
Kiehl's Age Defender Power Serum 27 ingredients
Jack Black Protein Booster Skin Serum 42 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
Kiehl's Age Defender Power Serum 27 ingredients
Jack Black Protein Booster Skin Serum 42 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningGlycerin
Humectant
Dimethicone
Emollient
Alcohol Denat.
Antimicrobial
Isononyl Isononanoate
EmollientButylene Glycol
Humectant
Ammonium Polyacryloyldimethyl Taurate
Emulsion StabilisingPhenoxyethanol
Preservative
Pentylene Glycol
Skin ConditioningHydrolyzed Soy Protein
HumectantParfum
Masking
Hydroxypropyl Tetrahydropyrantriol
Skin ConditioningPropylene Glycol
Humectant
Ruscus Aculeatus Root Extract
AstringentGlycine Soja Oil
Emollient
Caffeine
Skin ConditioningTocopherol
Antioxidant
Hydrolyzed Rice Protein
Skin ConditioningLimonene
Perfuming
Biosaccharide Gum-1
Skin ConditioningDisodium EDTA
Adenosine
Skin Conditioning
T-Butyl Alcohol
Perfuming
Hydroxypalmitoyl Sphinganine
Skin Conditioning
Cryptomeria Japonica Bud Extract
Skin ConditioningLinalool
Perfuming
Citral
Perfuming
Water, Glycerin, Dimethicone, Alcohol Denat., Isononyl Isononanoate, Butylene Glycol, Ammonium Polyacryloyldimethyl Taurate, Phenoxyethanol, Pentylene Glycol, Hydrolyzed Soy Protein, Parfum, Hydroxypropyl Tetrahydropyrantriol, Propylene Glycol, Ruscus Aculeatus Root Extract, Glycine Soja Oil, Caffeine, Tocopherol, Hydrolyzed Rice Protein, Limonene, Biosaccharide Gum-1, Disodium EDTA, Adenosine, T-Butyl Alcohol, Hydroxypalmitoyl Sphinganine, Cryptomeria Japonica Bud Extract, Linalool, Citral
Water
Skin ConditioningGlycerin
Humectant
Caprylic/Capric Triglyceride
MaskingAloe Barbadensis Leaf Juice
Skin Conditioning
Linum Usitatissimum Seed Oil
Perfuming
Camellia Sinensis Leaf Extract
Antimicrobial
Cocos Nucifera Oil
Masking
Dipeptide Diaminobutyroyl Benzylamide Diacetate
Skin Conditioning
Simmondsia Chinensis Seed Oil
Emollient
Sorghum Bicolor Stalk Juice
Skin ConditioningOrmenis Multicaulis Oil
Masking
Glycine Soja Oil
Emollient
Retinyl Palmitate
Skin Conditioning
Zea Mays Oil
Emulsifying
Hamamelis Virginiana Water
Astringent
Lonicera Caprifolium Flower Extract
Perfuming
Pelargonium Graveolens Flower Oil
Masking
Lonicera Japonica Flower Extract
Skin ConditioningRosmarinus Officinalis Leaf Oil
Masking
Plantago Lanceolata Leaf Extract
AntimicrobialButylene Glycol
Humectant
Caprylyl Glycol
EmollientXanthan Gum
EmulsifyingPolysorbate 20
Emulsifying
Tocopherol
Antioxidant
Ascorbyl Palmitate
Antioxidant
Taurine
BufferingSodium Hyaluronate
Humectant
Teprenone
Skin ConditioningCitric Acid
Buffering
Potassium Sorbate
Preservative
Carbomer
Emulsion StabilisingPalmitoyl Oligopeptide
Cleansing
Sodium Polystyrene Sulfonate
Emulsion StabilisingPhenoxyethanol
Preservative
Palmitoyl Tetrapeptide-7
Skin Conditioning
Alcohol
Antimicrobial
Citronellol
Perfuming
Tocopheryl Acetate
Antioxidant
Geraniol
Perfuming
Linalool
Perfuming
Sodium Sulfite
Preservative
Water, Glycerin, Caprylic/Capric Triglyceride, Aloe Barbadensis Leaf Juice, Linum Usitatissimum Seed Oil, Camellia Sinensis Leaf Extract, Cocos Nucifera Oil, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Simmondsia Chinensis Seed Oil, Sorghum Bicolor Stalk Juice, Ormenis Multicaulis Oil, Glycine Soja Oil, Retinyl Palmitate, Zea Mays Oil, Hamamelis Virginiana Water, Lonicera Caprifolium Flower Extract, Pelargonium Graveolens Flower Oil, Lonicera Japonica Flower Extract, Rosmarinus Officinalis Leaf Oil, Plantago Lanceolata Leaf Extract, Butylene Glycol, Caprylyl Glycol, Xanthan Gum, Polysorbate 20, Tocopherol, Ascorbyl Palmitate, Taurine, Sodium Hyaluronate, Teprenone, Citric Acid, Potassium Sorbate, Carbomer, Palmitoyl Oligopeptide, Sodium Polystyrene Sulfonate, Phenoxyethanol, Palmitoyl Tetrapeptide-7, Alcohol, Citronellol, Tocopheryl Acetate, Geraniol, Linalool, Sodium Sulfite
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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. Stay hydrated!
Learn more about WaterGlycerin is already naturally found in your skin. It helps moisturize and protect your skin.
A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.
As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.
Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.
Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.
In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.
This ingredient is organic, colorless, odorless, and non-toxic.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Learn more about GlycerinButylene Glycol (or BG) is used within cosmetic products for a few different reasons:
- It is a solvent, meaning that it helps to dissolve other ingredients. This also enhances the absorption of the product into one's skin.
- It is a humectant, which means that it helps attract moisture into the skin.
- It helps improve product application.
- It has mild preservative properties.
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.
It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.
Glycine Soja Oil comes from the soybean. Glycine Soja is native to eastern Asia.
Soybean oil is an emollient. It is rich in antioxidants and fatty acids including palmitic, stearic, oleic, and linoleic acids.
As an emollient, the fatty acids in soybean oil helps keep your skin soft and hydrated. It does so by creating a film on top that traps moisture in.
Soybean oil is also rich in vitamin E, a potent antioxidant. Vitamin E is also anti-inflammatory and provides a soothing effect.
Studies show soy may help fade hyperpigmentation from UVB. It does so by disrupting the melanin process from UVB induced skin inflammation.
This ingredient may not be malassezia folliculitis, or fungal-acne, safe.
Soybeans are rich in proteins and are part of the legume family. Foods made with soybeans include tofu, soymilk, edamame, miso, and soy sauce.
Learn more about Glycine Soja OilTocopherol (also known as Vitamin E) is a common antioxidant used to help protect the skin from free-radicals and strengthen the skin barrier. It's also fat soluble - this means our skin is great at absorbing it.
Vitamin E also helps keep your natural skin lipids healthy. Your lipid skin barrier naturally consists of lipids, ceramides, and fatty acids. Vitamin E offers extra protection for your skin’s lipid barrier, keeping your skin healthy and nourished.
Another benefit is a bit of UV protection. Vitamin E helps reduce the damage caused by UVB rays. (It should not replace your sunscreen). Combining it with Vitamin C can decrease sunburned cells and hyperpigmentation after UV exposure.
You might have noticed Vitamin E + C often paired together. This is because it is great at stabilizing Vitamin C. Using the two together helps increase the effectiveness of both ingredients.
There are often claims that Vitamin E can reduce/prevent scarring, but these claims haven't been confirmed by scientific research.
Learn more about TocopherolLinalool is a fragrance and helps add scent to products. It's derived from common plants such as cinnamon, mint, citrus, and lavender.
Like Limonene, this ingredient oxidizes when exposed to air. Oxidized linalool can cause allergies and skin sensitivity.
This ingredient has a scent that is floral, spicy tropical, and citrus-like.
Learn more about LinaloolIngredient Ratings
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