Somethinc Level 1% Encapsulated Retinol Versus Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide
Updated on January 30, 2025
Overview
Cool Features
They both contain retinoid and Vitamin E
Suited For
They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing, dark spots and better texture
Free From
They both do not contain any harsh alcohols, common allergens, parabens, silicones or sulfates
What's Inside
They both contain fragrances and oils
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.
Ingredient Info
Somethinc Level 1% Encapsulated Retinol 30 ingredients
Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide 43 ingredients
What's inside (and what isn't)
What's inside (and what isn't)
At a glance
Click on any of the items below to learn more
Somethinc Level 1% Encapsulated Retinol 30 ingredients
Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide 43 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningButylene Glycol
Humectant
Squalane
Emollient
Neopentyl Glycol Diheptanoate
EmollientPentylene Glycol
Skin ConditioningDipentaerythrityl Hexa C5-9 Acid Esters
Skin ConditioningBetaine
Humectant
Polyglycerin-3
Humectant
Ethylhexyl Methoxycinnamate
UV Absorber
1,2-Hexanediol
Skin Conditioning
Cetyl Ethylhexanoate
EmollientHydrogenated Olive Oil Unsaponifiables
Emollient
4-T-Butylcyclohexanol
Masking
Allantoin
Skin Conditioning
Poloxamer 235
EmulsifyingAcrylates/C10-30 Alkyl Acrylate Crosspolymer
Emulsion StabilisingHydrogenated Lecithin
Emulsifying
Xanthan Gum
EmulsifyingRetinol
Skin Conditioning
Sodium Dilauramidoglutamide Lysine
HumectantPolysorbate 20
Emulsifying
Sodium Ascorbate
Antioxidant
Sodium Phytate
Ethylhexylglycerin
Skin ConditioningEpigallocatechin Gallate
Antioxidant
BHT
Antioxidant
Disodium EDTA
Phenoxyethanol
Preservative
BHA
Antioxidant
Tocopherol
Antioxidant
Water, Butylene Glycol, Squalane, Neopentyl Glycol Diheptanoate, Pentylene Glycol, Dipentaerythrityl Hexa C5-9 Acid Esters, Betaine, Polyglycerin-3, Ethylhexyl Methoxycinnamate, 1,2-Hexanediol, Cetyl Ethylhexanoate, Hydrogenated Olive Oil Unsaponifiables, 4-T-Butylcyclohexanol, Allantoin, Poloxamer 235, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Hydrogenated Lecithin, Xanthan Gum, Retinol, Sodium Dilauramidoglutamide Lysine, Polysorbate 20, Sodium Ascorbate, Sodium Phytate, Ethylhexylglycerin, Epigallocatechin Gallate, BHT, Disodium EDTA, Phenoxyethanol, BHA, Tocopherol
Water
Skin ConditioningGlycerin
Humectant
Butylene Glycol
Humectant
Pentylene Glycol
Skin ConditioningNiacinamide
Smoothing
Cetyl Alcohol
Emollient
Isohexadecane
EmollientIsononyl Isononanoate
EmollientDiisopropyl Sebacate
Emollient2-Oleamido-1,3-Octadecanediol
Skin Conditioning4-T-Butylcyclohexanol
Masking
Acetyl Dipeptide-1 Cetyl Ester
Skin Conditioning
Adenosine
Skin Conditioning
Ceramide NP
Skin Conditioning
Hydroxypalmitoyl Sphinganine
Skin Conditioning
Lauroyl Lysine
Skin ConditioningOctyldodecanol
EmollientPentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
Antioxidant
Sodium Chloride
Masking
Sodium Hyaluronate
Humectant
Sodium Hydroxide
BufferingTrisodium Ethylenediamine Disuccinate
Retinol
Skin Conditioning
Tocopherol
Antioxidant
Dicaprylyl Ether
Emollient
Ammonium Polyacryloyldimethyl Taurate
Emulsion StabilisingBehenyl Alcohol
Emollient
Caprylyl Glycol
EmollientCarbomer
Emulsion StabilisingCetearyl Alcohol
Emollient
Cetearyl Glucoside
EmulsifyingGlycine Soja Oil
Emollient
Helianthus Annuus Seed Oil
Emollient
Hydroxyethylcellulose
Emulsion StabilisingLecithin
Emollient
Phenethyl Alcohol
MaskingPoloxamer 188
EmulsifyingPolycaprolactone
StabilisingSorbitan Laurate
Emulsifying
Steareth-100
Gel FormingCI 40800
Cosmetic ColorantChlorphenesin
Antimicrobial
Phenoxyethanol
Preservative
Water, Glycerin, Butylene Glycol, Pentylene Glycol, Niacinamide, Cetyl Alcohol, Isohexadecane, Isononyl Isononanoate, Diisopropyl Sebacate, 2-Oleamido-1,3-Octadecanediol, 4-T-Butylcyclohexanol, Acetyl Dipeptide-1 Cetyl Ester, Adenosine, Ceramide NP, Hydroxypalmitoyl Sphinganine, Lauroyl Lysine, Octyldodecanol, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Sodium Chloride, Sodium Hyaluronate, Sodium Hydroxide, Trisodium Ethylenediamine Disuccinate, Retinol, Tocopherol, Dicaprylyl Ether, Ammonium Polyacryloyldimethyl Taurate, Behenyl Alcohol, Caprylyl Glycol, Carbomer, Cetearyl Alcohol, Cetearyl Glucoside, Glycine Soja Oil, Helianthus Annuus Seed Oil, Hydroxyethylcellulose, Lecithin, Phenethyl Alcohol, Poloxamer 188, Polycaprolactone, Sorbitan Laurate, Steareth-100, CI 40800, Chlorphenesin, Phenoxyethanol
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.
So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterButylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.
Learn more about Butylene GlycolPentylene glycol is typically used within a product to thicken it. It also adds a smooth, soft, and moisturizing feel to the product. It is naturally found in plants such as sugar beets.
The hydrophilic trait of Pentylene Glycol makes it a humectant. As a humectant, Pentylene Glycol helps draw moisture from the air to your skin. This can help keep your skin hydrated.
This property also makes Pentylene Glycol a great texture enhancer. It can also help thicken or stabilize a product.
Pentylene Glycol also acts as a mild preservative and helps to keep a product microbe-free.
Some people may experience mild eye and skin irritation from Pentylene Glycol. We always recommend speaking with a professional about using this ingredient in your routine.
Pentylene Glycol has a low molecular weight and is part of the 1,2-glycol family.
Learn more about Pentylene Glycol4-T-Butylcyclohexanol has skin soothing and perfuming/masking properties.
A study from 2016 found it to have skin-soothing properties both in-vivo and in-vitro. It works by intercepting the signals of irritation and can soothe the skin in a few minutes.
According to a manufacturer, this ingredient has a scent similar to musk or patchouli. Besides having a skin soothing effect, it can also help cover other unpleasant scents as a masking ingredient.
Learn more about 4-T-ButylcyclohexanolRetinol is a gold-standard ingredient for anti-aging. It is a form of Vitamin A and belongs to the class of retinoids that also includes tretinoin.
Why is retinol famous?
It has the most scientific studies backing up its skin benefits out of all the non-prescription ingredients.
Retinol is proven to:
This is why retinol is effective at removing wrinkles, fading dark spots, treating acne, and reducing the appearance of pores.
Studies show retinol is less effective when exposed to UV. Be sure to look for appropriate packaging to keep your retinol potent (similar to Vitamin C).
Using retinol or any retinoids will increase sun-sensitivity in the first few months. Though studies show retinoids increase your skin's natural SPF with continuous use, it is best to always wear sunscreen and sun-protection.
We recommend speaking with a medical professional about using this ingredient during pregnancy.
Retinol may cause irritation in some people, so be sure to patch test. Experts recommend 'ramping up' retinol use: start using this ingredient once a week and work up to using it daily.
Read about Tretinoin
Learn more about RetinolPhenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.
It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.
Tocopherol (also known as Vitamin E) is a common antioxidant used to help protect the skin from free-radicals and strengthen the skin barrier. It's also fat soluble - this means our skin is great at absorbing it.
Vitamin E also helps keep your natural skin lipids healthy. Your lipid skin barrier naturally consists of lipids, ceramides, and fatty acids. Vitamin E offers extra protection for your skin’s lipid barrier, keeping your skin healthy and nourished.
Another benefit is a bit of UV protection. Vitamin E helps reduce the damage caused by UVB rays. (It should not replace your sunscreen). Combining it with Vitamin C can decrease sunburned cells and hyperpigmentation after UV exposure.
You might have noticed Vitamin E + C often paired together. This is because it is great at stabilizing Vitamin C. Using the two together helps increase the effectiveness of both ingredients.
There are often claims that Vitamin E can reduce/prevent scarring, but these claims haven't been confirmed by scientific research.
Learn more about TocopherolIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Somethinc Level 1% Encapsulated Retinol 30 ingredients
Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide 43 ingredients
Reviews
Here's what our community thinks
Somethinc Level 1% Encapsulated Retinol 30 ingredients
Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide 43 ingredients
Great retinol for beginners
This is a product with a low dose of retinol, which makes the product suited to apply in the eye area as well. A lot of my earlier products containing retinol were serums, while this is more of a cream. It makes it more hydrating, but without an additional moisturiser it is still drying me out.
Although the percentage of retinol is low, your skin has to adjust to Show more
This is my first Retinol ever and I’m happy that it works and it doesn’t irritate my sensitive skin. I noticed fine lines on my forehead are reduced. And I wake up with less redness and little to no breakouts.
