Kiehl's - s Nightly Refining Micro-Peel

Kiehl's s Nightly Refining Micro-Peel

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WORKS FOR
  • Exfoliation
  • Anti-aging
  • Moisturizing
  • Evens skin tone
  • +1 more
KEY INGREDIENTS
  • adenosine
  • ascorbyl glucoside
  • chenopodium quinoa seed extract
  • glycerin
  • hydroxyethyl urea
  • saccharum officinarum extract
  • +3 more
PROMISES
FULFILLED
75 /100
IRRITANCY
MEDIUM
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Formula review

See a mistake?
Promise
What does the product description say?
"Clinically-demonstrated to help accelerate surface skin cell turnover*, this facial serum freshens and smooths the skin for a youthful radiance, visibly refining skin tone and texture over time."
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
MEDIUM
does not meet threshold
See a mistake?
Promise
What does the product description say?
"Clinically-demonstrated to help accelerate surface skin cell turnover*, this facial serum freshens and smooths the skin for a youthful radiance, visibly refining skin tone and texture over time."
WIMJ summary

This product might help improve the skin tone through exfoliation. In other words, it helps to speed up the shedding of cells from the upper layer of the skin, and this might help reduce hyperpigmentation.

Ingredient Effectiveness Concentration Irritancy
MEDIUM
does not meet threshold
See a mistake?
Promise
What does the product description say?
"s Nightly Refining Micro-Peel"
From product name
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: hydroxyethyl urea.

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

This product contains good ingredients to attract water to the upper layer of the skin. These ingredients are called "humectants": glycerin, hydroxyethyl urea.

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. If the air is dry, humectants can speed up the moisture loss from the skin. This is why it is a good idea to use another product on top of this one to help "seal in" the moisture (look for ingredients like dimethicone, squalane, oils and butters).

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

Potential irritants

IRRITANCY
MEDIUM

Ingredients by volume

Ingredient Estimated concentration
Plain old water
45% - 55%
Produces temporary toning effect. Can help dissolve other ingredients or preserve products
8.2% - 10%
Used to regulate product's pH
4.4% - 5.4%
A derivative of urea, a compound that is naturally present in skin. Attracts water to the upper layer of the skin. Can enhance penetration of other ingredients
3.1% - 3.8%
Helps to control the skin's pH level. Maintains the skin's natural film of amino-lactic acids and oils. Helps to preserve products
2.3% - 2.8%
A plant extract that might help neutralize free radicals in skin, but research on its efficacy in skin is lacking
1.9% - 2.3%
Used to adjust the product's pH
1.6% - 2%
Helps soften the upper layer of the skin
1.4% - 1.7%
Sugar extract that helps attract water to the upper layer of the skin
1.1% - 1.4%
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
1% - 1.2%
Acts as a solvent for other ingredients. Speeds up the absorption of other ingredients into the skin
0.7% - 1.05%
An alpha-hydroxy acid (AHA), but is mostly used to stabilize product formulations in cosmetics
0.55% - 0.85%
Helps thicken the product formula and create a nice product formulation
0.55% - 0.8%
A preservative. It helps prevent bacterial growth in cosmetic products
0.45% - 0.65%
The ingredient is not recognized
TBC
A highly irritating fragrance
0.4% - 0.6%
Stabilizes the product formulation
0.4% - 0.6%
The ingredient is not recognized
TBC
0.4% - 0.6%
A plant extract. Can help attract water the upper layer of the skin and might have some anti-oxidant properties
0.45% - 0.7%
A preservative
0.25% - 0.5%
Traditionally used to treat sunburns, dermatitis and inflammation, but evidence for its effectiveness is lacking. The extract can contain humectants that help attract water into the skin
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
0.2% - 0.4%
A preservative
0.2% - 0.4%
A preservative
0.15% - 0.25%
A vitamin C derivative that is more stable but less potent than pure form of vitamin C. Has a potential to boost collagen production, nutralise free radicals and reduce hyperpigmentation, but the required concentration is likely to be much higher than for the pure form of vitamin C, limiting the ingredient's effectiveness in products
0.15% - 0.3%

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