Kiehl's - Ferulic Brew Facial Treatment Essence with Lactic Acid

Kiehl's Ferulic Brew Facial Treatment Essence with Lactic Acid

WORKS FOR
  • Anti-oxidation
  • Exfoliation
  • Anti-blemish
  • Anti-aging
  • Moisturizing
  • Evens skin tone
  • +3 more
KEY INGREDIENTS
  • lactic acid
  • ascorbyl glucoside
  • salicylic acid
  • ferulic acid
  • adenosine
  • arginine
  • glycerin
  • helianthus annuus seed oil
  • saccharomyces/rice ferment filtrate
  • sodium hyaluronate
  • squalane
  • tocopherol
  • +9 more
PROMISES
FULFILLED
81 /100
IRRITANCY
HIGH
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Formula review

See a mistake?
WIMJ summary

This product can help reduce breakouts and clogged pores because it contains the following ingredient: salicylic acid. This ingredient is used for treating acne and can have a noticeable effect.

Ingredient Effectiveness Concentration Irritancy
HIGH
meets threshold
See a mistake?
Promise
What does the product description say?
"With ingredients brewed for 120 hours, this 99 percent natural* formula with ferulic acid, lactic acid, and squalane provides powerful antioxidant protection to visibly smooth and even texture and tone, reduce fine lines, and impart a healthy-looking glow."
WIMJ summary

This product contains adenosine, ferulic acid. These ingredients 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
meets threshold
MEDIUM
does not meet threshold
See a mistake?
Promise
What does the product description say?
"Fine Lines and Wrinkles, Dullness, and Uneven Texture Formulation."
WIMJ summary

This product might be able to help reduce hyperpigmentation and even out the skin tone because it contains salicylic acid. The effect, if any, is likely to be small. Keep in mind that you would need to apply any topical skincare targetted at hypigmentation consistently for a couple of months to get a result. No topical skincare product can help get rid of hyperpigmentation (including post-acne marks and age spots) instantly.

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

Ingredient Effectiveness Concentration Irritancy
MEDIUM
meets threshold
LOW
meets threshold
HIGH
does not meet threshold
See a mistake?
Promise
What does the product description say?
"Lactic Acid (AHA)."
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: salicylic acid.

Ingredient Effectiveness Concentration Irritancy
HIGH
meets threshold
HIGH
does not meet threshold
LOW
does not meet threshold
See a mistake?
Promise
What does the product description say?
"Hydrates and supports skin’s moisture barrier."
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: arginine, glycerin.

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: arginine, helianthus annuus seed oil.

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

This product contains antioxidants (ferulic acid) that can help neutralize free radicals in skin. By doing so, they can lessen the damage the skin gets from the UV light (sun).

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

Potential irritants

IRRITANCY
HIGH
Ingredient Irritancy Skin Benefit
pentylene glycol
Has skin benefit
lactic acid
Has skin benefit
sea salt
Has skin benefit

Ingredients by volume

Ingredient Estimated concentration
Plain old water
TBC
An amino acid that is naturally present in skin and helps keep it hydrated. When used together with AHAs, it can reduce their irritating effect on the skin
TBC
A product of yeast fermentation. Can contain humectants that help attract water to the upper layer of the skin and might help neutralize free oxidants
TBC
Helps soften the upper layer of the skin while creating a non-greasy feel on the skin. Helps to dissolve other ingredients
TBC
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
TBC
Used to preserve products, dissolve other ingredients and create a nice product texture
TBC
An exfoliating and moisturizing alpha-hydroxy acid (AHA). Typically causes less irritation than other AHAs, for example, glycolic acid. At high concentrations (about 15%), lactic acid can help reduce lines and wrinkles. Recent studies show that lactic acid can support the "good" bacteria living on skin's surface (healthy skin microbiom)
TBC
Acts as a solvent for other ingredients. Speeds up the absorption of other ingredients into the skin
TBC
An oil naturally present in skin. Works as an emollient to soften the skin and form a protective layer on its surface without a greasy feeling.
TBC
Used to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin
TBC
Used to thicken the product formulation and might help to add minerals to the surface of the skin. It is used in scrubs as a physical exfoliant. Can increase sensitivity to other ingredients if left on the skin or used in high concentration
TBC
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
TBC
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
TBC
Used for skin exfoliation. It has an anti-inflammatory and anti-bacterial effect, helps to unclog pores, prevent blemishes and speed up healing of the existing ones. Sometimes referred to as a BHA (beta-hydroxy acid)
TBC
A potent anti-oxidant that has been shown to be effective in neutralizing free radicals in skin. There seem to have a synergetic effect of ferulic acid, vitamin E and C, meaning that when the ingredients are used together, they enhance each other's ability protect the skin against free radicals. Ferulic acid also helps to stabilize other ingredients - including vitamins C and E. It can help to even out the skin tone. Ferulic acid is approved for use as a sunscreen ingredient in Japan in concentrations up to 10%
TBC
TBC
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
TBC
Plant extract that can be irritating and is a known allergen
TBC
A great emollient due to its high linoleic acid content. One of the most effective plant oils in helping skin hydration and repairing skin barrier function
TBC
TBC
An essential oil that is used as a fragrance and can be irritating. It might have some anti-oxidant effect in skin
TBC
A fragrance. Can be irritating
TBC
An essential oil. Can be irritating. Can become an allergen with oxidation
TBC
TBC
The ingredient is not recognized
TBC
TBC
The ingredient is not recognized
TBC
TBC
Used as a fragrance and can be irritating
TBC
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
TBC
A fragrance. Can be irritating
TBC
A fragrance. Can be irritating
TBC
A common frangrance that can easily irritate skin, especially if exposed to air, light or heat
TBC
TBC

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