Works for:
based on ingredients and %- Anti-aging
- Moisturizing
- Anti-oxidation
- Evens skin tone
Can it cause trouble?
- Irritation risk: high
- Comedogenic risk ingredients: 0
Key actives
Product Summary
"Kiehl's - Ferulic Brew Rejuvenating Facial Essence" is effective for: Anti-aging
This product could be helpful for: Moisturizing and Evens skin tone, but its actives are not the most effective or are not well-studied.
Ingredient callouts
- This product contains acids (lactic acid 1.60% - 2.00%). Their concentration is low, and they will not have a strong exfoliating effect. Instead, they work to support the skin natural acid mantle and to attract water (as humectants). Lactic acid is particularly good in attracting water to the upper layer of the skin and improving the skin barrier.
- Adenosine 0.40% - 0.60%. It is a chemical present inside our skin cells. A clinical trial confirmed that topical application of Adenosine in a low concentration can reduce dynamic wrinkles (these are the wrinkles that appear with age in a places where our mimic is the most active, for example, in the corners of the eyes or on the forehead).
- Humectants (sodium hyaluronate 0.15% - 0.30%, glycerin 2.40% - 2.90% and arginine 6.30% - 7.70%). These ingredients help attract water to the upper layer of the skin and improve the skin hydration.
Price
The product retails from 46.70$ up to 132.30$ in the United States.
For a detailed price comparison: click here.
Anti-aging
What does the product description say?
Ferulic Brew Rejuvenating Facial Essence All Skin Types, including Sensitive Skin A Ferulic Acid facial essence boosting radiance and the feeling of resilience for skin that looks and feels youthful.
Source: N/A
This product can help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness because it contains adenosine.
These ingredients in the product can also be helpful, even though there is less evidence for their effectiveness: ferulic acid.
Keep in mind that it typically takes at least 6 weeks to notice any results because the changes that are needed to improve fine lines and elasticity happen in the deeper layers of the skin. No topical anti-aging product can “erase” wrinkles or fully reverse signs of aging.
Might help improve cell turnover and reduce inflammation in skin. One study shows that the ingredients might be able to help reduce dynamic wrinkles (for example, in the corners of the eyes or on the forehead)
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%
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 microbiome)
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
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
Anti-oxidation
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).
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%
Might help improve cell turnover and reduce inflammation in skin. One study shows that the ingredients might be able to help reduce dynamic wrinkles (for example, in the corners of the eyes or on the forehead)
An essential oil. Can be irritating. Can become an allergen with oxidation
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
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
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
An essential oil that is used as a fragrance and can be irritating. It might have some anti-oxidant effect in skin
Evens skin tone
The following ingredient (ingredients) in this product might be helpful, but there is no evidence to confirm that it actually works: ferulic acid.
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%
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 microbiome)
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
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)
Moisturizing
What does the product description say?
Ferulic Brew Rejuvenating Facial Essence
Source: From product name
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.
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
One of the best moisturizing ingredients. Attracts water into the upper layer of the skin
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.
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
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
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
Might help improve cell turnover and reduce inflammation in skin. One study shows that the ingredients might be able to help reduce dynamic wrinkles (for example, in the corners of the eyes or on the forehead)
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
Helps soften the upper layer of the skin while creating a non-greasy feel on the skin. Helps to dissolve other ingredients
Used to preserve products, dissolve other ingredients and create a nice product texture
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 microbiome)
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
How honest is this product?
| Promise | Can it deliver? |
|---|---|
| Anti-aging | |
| Moisturizing |
Total Promises Fulfilled score: 87/100.
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Potential irritants
Comedogenic ingredients
No comedogenic ingredients detected
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| Product | Similarity | Price | Irritancy |
|---|---|---|---|
 Kiehl's Ferulic Brew Rejuvenating Facial Essence | Current | $46.70 | |
Farm Stay Dermacube Probiotics Therapy Toner | 68% | $23.49 | |
Benton Aloe BHA Skin Toner | 67% | $15.83 | |
 Lancôme Rose Milk Re-Hydrating Mist | 52% | - | |
 Garnier Natural Vegan Rose Soothing Hydrating Glow Mist | 52% | $5.99 | |
 HERA Cell Essence Biome Plus Only | 38% | $47.60 |
Key Actives
Potential irritants
Comedogenic ingredients
We couldn't find any comedogenic ingredients in this product
All ingredients
Ingredient list view
Water, Arginine, Saccharomyces/rice ferment filtrate, Dicaprylyl ether, Glycerin, Pentylene glycol, Lactic acid, Propanediol, Squalane, Butylene glycol, Sodium chloride, Tocopherol, Ascorbyl glucoside, Salicylic acid, Ferulic acid, Caramel, Adenosine, Lavandula hybrida oil, Helianthus annuus seed oil, Cupressus sempervirens leaf/nut/stem oil, Anthemis nobilis flower oil, Linalool, Pelargonium graveolens flower oil, Brassica campestris extract, Brassica campestris seed extract, Brassica campestris sprout extract, Mentha piperita oil, Sodium hyaluronate, Citronellol, Geraniol, Limonene, Origanum majorana leaf oil
- Glycerol and the skin: holistic approach to its origin and functions
- Epidermal and dermal effects of topical lactic acid
- Dual Effects of Alpha-Hydroxy Acids on the Skin
- Vitamin E in dermatology
- Vitamin E and Skin Health
- The Roles of Vitamin C in Skin Health
- Stability, transdermal penetration, and cutaneous effects of ascorbic acid and its derivatives
- Salicylic acid as a peeling agent: a comprehensive review
- Beta Hydroxy Acids
- A review of toxicity from topical salicylic acid preparations
- Glycolic Acid Peels Versus Salicylic–Mandelic Acid Peels in Active Acne Vulgaris and Post‐Acne Scarring and Hyperpigmentation: A Comparative Study
- Ferulic Acid: Therapeutic Potential Through Its Antioxidant Property
- Ferulic acid stabilizes a solution of vitamins C and E and doubles its photoprotection of skin
- Antioxidant Properties of Ferulic Acid and Its Possible Application
- Evaluation of anti-wrinkle efficacy of adenosine-containing products using the FOITS technique
- Effect of Olive and Sunflower Seed Oil on the Adult Skin Barrier: Implications for Neonatal Skin Care
- Topically Applied Sunflower Seed Oil Prevents Invasive Bacterial Infections in Preterm Infants in Egypt
- Effect of topically applied lipids on surfactant-irritated skin
- Impact of topical oils on the skin barrier: possible implications for neonatal health in developing countries
- Safety Assessment of Anthemis nobilis– Derived Ingredients as Used in Cosmetics
- Fragrance Compound Geraniol Forms Contact Allergens on Air Exposure. Identification and Quantification of Oxidation Products and Effect on Skin Sensitization
- Hyaluronic acid: A key molecule in skin aging
- Hyaluronan (Hyaluronic Acid): a natural moisturizer for skin care
- Annex I: Clinical evidence regarding sensitisation to individual fragrance chemicals and to natural extracts