Kiehl's - Vital Skin-Strengthening Hyaluronic Acid Super Serum

Kiehl's Vital Skin-Strengthening Hyaluronic Acid Super Serum

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Can it work? Irritants Ingredient concentrations Sources Similar products Q&A Where to buy
WORKS FOR
  • Exfoliation
  • Anti-aging
  • Moisturizing
  • Evens skin tone
  • +1 more
KEY INGREDIENTS
  • capryloyl salicylic acid
  • adenosine
  • dimethicone
  • glycerin
  • sodium acetylated hyaluronate
  • tocopherol
  • +3 more
PROMISES
FULFILLED
75 /100
IRRITANCY
HIGH
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Formula review

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Promise
What does the product description say?
"Clinically demonstrated to visibly reduces fine lines by 27% Based on Skin Strength Index = Composite average score of skin suppleness, plumpness, and resiliency."
WIMJ summary

This product contains adenosine. This ingredient might be able to help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness, but there is not enough evidence that it actually works.

Ingredient Effectiveness Concentration Irritancy
MEDIUM
meets threshold
LOW
does not meet threshold
See a mistake?
WIMJ summary

The following ingredient (ingredients) in this product might be helpful, but there is no evidence to confirm that it actually works: capryloyl salicylic acid.

Ingredient Effectiveness Concentration Irritancy
MEDIUM
meets threshold
See a mistake?
WIMJ summary

This product can help exfoliate the skin. In other words, it helps break down the bonds between dead cells on the surface of the skin and speed up the skin turnover. Skin often appears softer and brighter after exfoliation, but overdoing it can result in disrupted skin barrier. The following ingredient is doing the exfoliating job in this product: capryloyl salicylic acid.

Ingredient Effectiveness Concentration Irritancy
HIGH
meets threshold
See a mistake?
Promise
What does the product description say?
"Vital Skin-Strengthening Hyaluronic Acid Super Serum"
From product name
WIMJ summary

This product can help improve hydration of the skin with the two types of ingredients.

The first type is called “humectants”:
these ingredients help attract water. When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from within deeper layers of the skin. The following ingredients in this product do the job: glycerin, sodium acetylated hyaluronate.

This product also contains ingredients called “occlusives”. They help reduce the speed with which our skin loses moisture to the outside environment. These ingredients also help soften the upper layer of the skin, so it feels less tight and nicer to the touch. The following ingredients in this product do the job: dimethicone, caprylyl glycol.

Ingredient Effectiveness Concentration Irritancy
HIGH
meets threshold
HIGH
meets threshold
HIGH
meets threshold

Potential irritants

IRRITANCY
HIGH

Ingredients by volume

Ingredient Estimated concentration
Plain old water
45% - 55%
A silicone that helps to reduce water loss from the surface of the skin. Can temporarily "fill in" lines and wrinkles, absorb oil, and create a nice product finish
6.6% - 8.1%
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
4.1% - 5.1%
Produces temporary toning effect. Can help dissolve other ingredients or preserve products
3.2% - 3.9%
A plant extract that can help calm down inflammation in skin. Can, however, itself be irritating
2.2% - 2.7%
Acts as a solvent for other ingredients. Speeds up the absorption of other ingredients into the skin
2% - 2.4%
A preservative. It helps prevent bacterial growth in cosmetic products
0.5% - 1%
Pure form of vitamin E. Can help moisturise and protect the skin from free radicals. Often used to help stabilise other ingredients or the formula itself
1.4% - 1.7%
Used to create a thicker product consistency
1.2% - 1.4%
A berry extract that might help neutralize free radicals on the surface of the skin
0.95% - 1.15%
0.65% - 1%
Helps preserve products and creates a nice product texture
0.6% - 0.9%
Used to create a thicker product consistency
0.5% - 0.8%
Helps oil and water mix together
0.5% - 0.75%
A plant extract that might have some anti-inflammatory properties, but solid evidence is lacking. It can be irritating
0.45% - 0.7%
A type of hyaluronic acid that works as an excellent moisturizer by attracting water into the upper layer of the skin. Is typically feels less sticky on the skin compared to the usual hyaluronic acid
0.45% - 0.65%
Helps oil and water mix together
0.45% - 0.7%
Stabilizes the product formulation
0.35% - 0.6%
A plant extract that is rich in a fragrance compound eugenol that is a frequent allergen and can be irritating. It might also contain anti-oxidants to help neutralize free radicals
0.3% - 0.55%
An essentil oil from orange peel. Potential allergen and can be irritating
0.3% - 0.55%
A common frangrance that can easily irritate skin, especially if exposed to air, light or heat
0.25% - 0.45%
Might help improve cell turnover and reduce inflammation in skin. One study shows that the ingredients might be able to stimulate collagen production in skin
0.25% - 0.5%
Used to adjust the product's pH
0.25% - 0.45%
Used as a fragrance. Smells similar to jasmine
0.25% - 0.45%
Can work as an exfoliant but is typically used to adjust the product pH
0.25% - 0.45%
A fragrance. Is a likely irritant
0.2% - 0.35%
A preservative
0.25% - 0.4%
An essential oil. Can be irritating. Can become an allergen with oxidation
0.25% - 0.4%
A fragrance with a lemon scent. A likely irritant
0.2% - 0.35%
A preservative
0.2% - 0.35%
An essential oil. Potential allergen and can be irritating. It has some anti-bacterial properties
0.2% - 0.35%
A plant extract. Used as a fragrance. Is a common allergen and irritant
0.15% - 0.3%
0.15% - 0.25%
A fragrance. Can be irritating
0.1% - 0.2%
A fragrance. Can be irritating
0.1% - 0.15%
A fragrance. Can be irritating
0.05% - 0.1%
A plant oil with high content of volatile compounds that can irritate the skin. Can be used as a fragrance. Has anti-bacterial properties and might help neutralize free radicals on the surface of the skin
0.05% - 0.1%

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