Kiehl's Daily Hydrating and Renewing Skin Duo
- Anti-aging
- Exfoliation
- Moisturizing
- Evens skin tone
- +2 more
- salicylic acid
- niacinamide
- Retinoid, derivative of vitamin A
- hydroxypalmitoyl sphinganine
- +20 more

Price comparison
Can the product deliver on its promises?
Promise
What does the product description say?WIMJ summary for anti-aging
This product can help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness because it contains retinol.
These ingredients in the product can also be helpful, even though there is less evidence for their effectiveness: acetyl dipeptide-1 cetyl ester, adenosine.
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.
Ingredient | Effectiveness | Concentration | Irritancy |
---|---|---|---|
HIGH | |||
MEDIUM
| |||
MEDIUM
|
Promise
What does the product description say?WIMJ summary for evens skin tone
This product can help reduce hypepigmentation and even out the skin tone because it contains the following effective ingredients: retinol.
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.
Ingredient | Effectiveness | Concentration | Irritancy |
---|---|---|---|
HIGH | |||
HIGH | |||
LOW
|
Promise
What does the product description say?WIMJ summary for exfoliation
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: retinol.
Ingredient | Effectiveness | Concentration | Irritancy |
---|---|---|---|
HIGH | |||
HIGH | |||
LOW
|
Promise
What does the product description say?WIMJ summary for moisturizing
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 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: helianthus annuus seed oil, myristyl myristate.
The following ingredients in this product are especially good for supporting the skin barrier and helping with the hydration level: acetyl dipeptide-1 cetyl ester, ceramide np, hydroxypalmitoyl sphinganine
Ingredient | Effectiveness | Concentration | Irritancy |
---|---|---|---|
HIGH | |||
HIGH | |||
HIGH |
WIMJ summary for anti-blemish
This product can help reduce breakouts and clogged pores because it contains the following ingredient: retinol. This ingredient is used for treating acne and can have a noticeable effect.
Ingredient | Effectiveness | Concentration | Irritancy |
---|---|---|---|
HIGH | |||
HIGH | |||
HIGH |
WIMJ summary for anti-oxidation
This product contains antioxidants (retinol) 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 | |||
LOW
| |||
LOW
|
How honest is this product?
Promise | Can it deliver? |
---|---|
Anti-aging | |
Exfoliation | |
Moisturizing | |
Evens skin tone | |
Anti-oxidation | |
Anti-blemish |
Potential irritants

Ingredient | Irritancy | Skin Benefit |
---|---|---|
peg-8 stearate | ||
myristyl myristate | ||
prunus armeniaca kernel oil |
Ingredients by volume
Ingredient | Estimated concentration |
---|---|
Plain old water
| 45% - 55% |
One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant
| 4.5% - 5.5% |
A silicone that serves as an emollient. Helps create a nice non-greasy feels
| 4.1% - 5% |
Show more |
Questions
Skincare resources
Scientific Sources
- Glycerol and the skin: holistic approach to its origin and functions
- Safety Assessment of PEG Diesters as Used in Cosmetics
- Safety Assessment of Pentaerythrityl Tetraesters as Used in Cosmetics
- Study on the Composition of Rice Bran Oil and Its Higher Free Fatty Acids Value
- Use of “natural” oils for moisturization: Review of olive, coconut, and sunflower seed oil
- Anti-Inflammatory and Skin Barrier Repair Effects of Topical Application of Some Plant Oils
- Vitamin E in dermatology
- Vitamin E and Skin Health
- The fatty acid profile of the skin surface lipid layer in papulopustular rosacea
- Acceptability and Efficacy of an Emollient Containing Ceramide-Precursor Lipids and Moisturizing Factors for Atopic Dermatitis in Pediatric Patients
- Emollient treatment of atopic dermatitis: latest evidence and clinical considerations
- 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
- Niacinamide - mechanisms of action and its topical use in dermatology
- Gehring, W. (2004). Nicotinic acid/niacinamide and the skin. Journal of Cosmetic Dermatology, 3(2), 88–93. doi:10.1111/j.1473-2130.2004.00115.x
- Safety Assessment of Ceramides as Used in Cosmetics
- Evaluation of anti-wrinkle efficacy of adenosine-containing products using the FOITS technique
- Skin hydration is significantly increased by a cream formulated to mimic the skin’s own natural moisturizing systems
- Topically Applied Ceramides Interact with the Stratum Corneum Lipid Matrix in Compromised Ex Vivo Skin
- Safety Assessment of Pentaerythrityl Tetra-Di-t-Butyl Hydroxyhydrocinnamate as Used in Cosmetics
- Hyaluronic acid: A key molecule in skin aging
- Hyaluronan (Hyaluronic Acid): a natural moisturizer for skin care
- Retinoids in the treatment of skin aging: an overview of clinical efficacy and safety
- Improvement of naturally aged skin with vitamin A (retinol)
- A comparative study of the effects of retinol and retinoic acid on histological, molecular, and clinical properties of human skin
- Safety Assessment of Acryloyldimethyltaurate Polymers as Used in Cosmetics
- 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