Kiehl's Age Defender Power Serum

Kiehl's Age Defender Power Serum
6.6
/ 10
Moisturizing
10.0 Humectancy icon Humectancy
3.3 Occlusivity icon Occlusivity
$$$$

Review

Results you may expect from using Kiehl's Age Defender Power Serum:

Based on the ingredient analysis by CreamScan, these are the key benefits you can expect from using Kiehl's Age Defender Power Serum:

  • Significant moisturizing. It has a moisturizing rating of 6.6 out of 10.

How moisturizing is it?

Highly moisturizing: Kiehl's Age Defender Power Serum has a moisturizing rating of 6.6 out of 10.

Is it more humectant or occlusive? Significantly more humectant. It has a maximum humectancy of 10 out of 10, primarily due to the substantial concentration of Glycerin (est. ≈9.0%) and Butylene Glycol (est. ≈2.5%), and a moderate occlusivity of 3.3 out of 10, mainly due to the high content of Dimethicone (est. ≈6.0%).

Please refer to the Ratings section below for details of the moisturizing rating calculation.

Anti-wrinkle efficacy

According to CreamScan analysis, Kiehl's Age Defender Power Serum has a zero anti-wrinkle rating.

It contains Caffeine and Adenosine, two ingredients marketed as effective in reducing wrinkles. However, the studies supporting the anti-wrinkle claims of these ingredients provide insufficient evidence of efficacy according to CreamScan Research Evaluation Standards. Therefore, these ingredients do not generate the anti-wrinkle rating.

Moisturizers, when used regularly, are proven to prevent wrinkle formation and even reduce existing wrinkles. Therefore, this product, like any other moisturizer, could deliver some anti-wrinkle effects through its moisturizing action.

Please refer to the Ratings section below for details of the anti-wrinkle rating calculation.

Ingredients

Est. % Ingredient Origin Functions
65
9
6
4
3
2.5
2
1
1
1
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
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Ratings

All humectants
14.1
9
2.5
1
1
0.3
0.3
Benchmark
10
All occlusives
6.6
6.0
0.3
0.3
Benchmark
20
Moisturizing rating
6.6
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 14.1 10
10.0
9
2.5
1
1
0.3
0.3
Occlusivity All occlusives 6.6 20
3.3
6.0
0.3
0.3
Moisturizing rating
6.6
Ingredient Est. % Benchmark Humectancy
9
2.5
1
1
0.3
0.3
All humectants 14.1 10
10
All humectants
14.1
9
2.5
1
1
0.3
0.3
Benchmark
10
Ingredient Est. % Benchmark Occlusivity
6
0.3
0.3
All occlusives 6.6 20
3.3
All occlusives
6.6
6.0
0.3
0.3
Benchmark
20
Ingredient
Ingredient anti-wrinkle power
when present at, %
in this formula est. %
Rating
n/a
- 0.3 -
n/a
- 0.3 -
Total
0
Caffeine
-
Ingredient anti-wrinkle power
n/a
when present at, %
-
in this formula, est. %
0.3
Adenosine
-
Ingredient anti-wrinkle power
n/a
when present at, %
-
in this formula, est. %
0.3
Anti-wrinkle rating
0
Ingredient Est. % Benchmark
Rich in Antioxidants
0.3
0.3
0.3
All antioxidants 0.9 3 No
All antioxidants
0.9
Glycine Soja (Soybean) Oil
0.3
Caffeine
0.3
Tocopherol
0.3
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
0.3
0.3
All soothing 0.6 5 No
All soothing
0.6
0.3
0.3
Benchmark
5

Ingredients explained

Water
Est. %65
Function
Origin
The most used ingredient in skincare. Its concentration defines the product texture: rich creams may have about 50% of water while a light jelly about 90%. Water doesn’t moisturize the skin by itself and is used in skincare as a solvent for other ingredients.
Glycerin
Est. %9
Function
Origin

The most popular moisturizing ingredient in the world. It is a powerful humectant – cheap yet very effective.

Dimethicone
Est. %6
Function
Origin
The most common silicone in skincare. It forms a silky, smooth film on the skin’s surface and can help to prevent water loss. It also aids in wound healing and can treat and soften scars. Dimethicone is considered to be very safe for use.
Alcohol Denat.
Est. %4
Function
Origin

Denatured alcohol is ethanol that contains additives that make it unsafe to consume. It is mainly used as a solvent and an antimicrobial agent. A major drawback to alcohol denat. is that it dries out the skin.

Isononyl Isononanoate
Est. %3
Function
Origin
An ester of a branched fatty acid with a branched fatty alcohol. It is an easily spreadable emollient that has a silky, dry, non-greasy feel on the skin.
Butylene Glycol
Est. %2.5
Function
Origin
A clear, colorless liquid humectant that draws moisture to the skin. The humectancy of butylene glycol, owed to its two hydroxyl groups, is quite considerable, although not as powerful as glycerin, which contains three hydroxyl groups.
Ammonium Polyacryloyldimethyl Taurate
Est. %2
Function
Origin
An emulsion stabilizer and thickener with gelling properties. The products containing this ingredient frequently feature lightweight and refreshing aesthetics upon application to the skin.
Phenoxyethanol
Est. %1
Function
Origin
The most frequently used preservative in skincare. It is a clear, oil-like liquid synthetic substance that protects products from harmful bacteria and yeast, whilst still leaving skin microflora unharmed. It is confirmed by research to be harmless.
Pentylene Glycol
Est. %1
Function
Origin
A naturally or synthetically derived preservative that exhibits effective antifungal and antibacterial traits. It also acts as a booster for more traditional preservatives. Pentylene glycol can also serve as a moisturizing humectant and solvent.
Hydrolyzed Soy Protein
Est. %1
Function
Origin
A mixture of proteins obtained from soybeans. It can have many different functions depending on the manufacturer, although it is most commonly used in skincare products as a humectant moisturizing ingredient.
Fragrance
Est. %0.3
Function
Origin
Under trade secret law, manufacturers have the right not to disclose what exactly went into the fragrance and use the unspecific word Fragrance or Parfum instead. Many fragrances are highly allergenic.
Hydroxypropyl Tetrahydropyrantriol
Est. %0.3
Function
Origin
Description is coming soon
Propylene Glycol
Est. %0.3
Function
Origin
A clear, thick, odorless liquid of synthetic origin. Its main function is to stabilize cosmetic products exposed to varying temperatures. It is also a moderately strong humectant with similar properties to glycerin.
Ruscus Aculeatus Root Extract
Est. %0.3
Function
Origin
An extract derived from the Butcher's broom root. It is a toning ingredient that can help to increase microcirculation.
Glycine Soja (Soybean) Oil
Est. %0.3
Function
Origin
An occlusive moisturizing oil expressed from soybeans. It does not leave an oily feeling on the skin due to its low content of saturated fatty acids. Glycine soja oil contains emollient fatty acids and a significant amount of antioxidants.
Caffeine
Est. %0.3
Function
Origin
An antioxidant compound that is obtained from coffee and tea leaves. It increases the microcirculation of blood in the skin and is claimed to be able to reduce the appearance of orange peel skin (although the research is lacking).
Tocopherol
Est. %0.3
Function
Origin
Simply another name for vitamin E. Tocopherol is a fantastic ingredient and especially beneficial for dry and inflamed skin. It has occlusive moisturizing, emollient, antioxidant, and photoprotective properties.
Hydrolyzed Rice Protein
Est. %0.3
Function
Origin
A protein derived from rice bran with film-forming abilities. It can help increase moisturization in skin.
Limonene
Est. %0.3
Function
Origin
One of the most used fragrances in skincare products. It is produced from the peels of citrus fruits and has a fresh, pleasant, citrusy smell. People who are sensitive to citrus should try to avoid it, or at least do a patch test before using it.
Biosaccharide Gum-1
Est. %0.3
Function
Origin
A polysaccharide with humectant moisturizing and soothing properties.
Disodium EDTA
Est. %0.3
Function
Origin
A synthetic chelator that helps to maintain the look and smell of a product by 'locking up' troublesome metal ions.
Adenosine
Est. %0.3
Function
Origin

A key molecule responsible for energy transportation, signaling, and enzyme activity. Adenosine is a popular anti-wrinkle ingredient, however, the key study about its anti-wrinkle efficacy (1) does not meet CreamScan Research Evaluation Standards as it is not double-blind.

t-Butyl Alcohol
Est. %0.3
Function
Origin
Description is coming soon
Hydroxypalmitoyl Sphinganine
Est. %0.3
Function
Origin
Description is coming soon
Cryptomeria Japonica Bud Extract
Est. %0.3
Function
Origin
Description is coming soon
Linalool
Est. %0.3
Function
Origin
A fragrant, volatile compound naturally present in many essential oils. It has a pleasant scent and is often used in skincare products as a fragrance. People with sensitive skin should try to avoid it, or at least do a patch test before using it.
Citral
Est. %0.3
Function
Origin
A fragrant compound found in many essential oils (especially lemon myrtle and lemongrass essential oil). It has a sweet, lemon-like scent. People with sensitive skin should try to avoid products with citral, or at least do a patch test before using.

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