Here's our complete breakdown comparing the ingredients, attributes, and more of Paula's Choice 1% Retinol Booster versus Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide .
Published on September 05, 2022
Overview
What they are
These products are both reef safe . They have a total of 7 ingredients in common
Cool Features
They both contain ceramides, peptides and retinoid
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
We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that need an update? Let us know.
Facial Treatment
Facial treatments are specially designed to treat a skin concern. Acne treatments and anti-aging products are common examples of facial treatments.
Serum
Serums are highly concentrated with ingredients to provide skin with benefits. They should be used after cleansing and before moisturizing.
Price
Ingredient Info
Paula's Choice 1% Retinol Booster 29 ingredients
Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide 43 ingredients
Alcohol Free
This product is free of harsh alcohols 🎉
Silicon Free
This product is free of silicons 🎉
Fragrance Free
This product is free of fragrances 🎉
Sulfate Free
This product is free of sulfates 🎉
Paraben Free
This product is free of parabens 🎉
Oil Free
This product is free of oils 🎉
Not Malassezia Safe
Ingredients in this product that are not malassezia safe:
Reef Safe
This product is free of ingredients that damage reefs 🎉
EU Allergen Free
This product is free of EU allergens 🎉
Non Vegan
This product is not vegan 😥
Cruelty Free
This product is cruelty-free 🎉
Alcohol Free
This product is free of harsh alcohols 🎉
Silicon Free
This product is free of silicons 🎉
Contains Fragrance
Ingredients in this product that are forms of fragrance:
Sulfate Free
This product is free of sulfates 🎉
Paraben Free
This product is free of parabens 🎉
Contains Oils
Ingredients in this product that are types of oil:
Not Malassezia Safe
Ingredients in this product that are not malassezia safe:
Reef Safe
This product is free of ingredients that damage reefs 🎉
EU Allergen Free
This product is free of EU allergens 🎉
Non Vegan
This product is not vegan 😥
Not Cruelty Free
This product is not cruelty-free 😥
At a glance
Click on any of the items below to learn more
Paula's Choice 1% Retinol Booster 29 ingredients
Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide 43 ingredients
Notable Ingredients
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
Benefits
This product contains 3 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 4 ingredients that may have this attribute:
This product contains 3 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 3 ingredients that may have this attribute:
This product contains 4 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
Concerns
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
Notable Ingredients
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
Benefits
This product contains 5 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 4 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 3 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 4 ingredients that may have this attribute:
Concerns
This product contains 2 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 2 ingredients that may have this attribute:
This product contains 1 ingredient that may have this attribute:
This product contains 1 ingredient that may have this attribute:
Build your routine, track which ingredients work for you, and much more with your free account.
Join SkinSortIngredients Compared
Ingredients that are highlighted in purple are present in both products.
Paula's Choice 1% Retinol Booster 29 ingredients
Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide 43 ingredients
Water • Glycereth-7 Triacetate • Glycerin • Carthamus Tinctorius Oleosomes • Isopentyldiol • Polyglyceryl-10 Behenate/Eicosadioate • Butylene Glycol • Pyrus Malus Fruit Extract • Polysorbate 20 • Retinol • Glycyrrhiza Glabra Root Extract • Ceramide NP • Palmitoyl Tripeptide-1 • Avena Sativa Kernel Extract • Epilobium Angustifolium Flower/Leaf/Stem Extract • Arctium Lappa Root Extract • Salix Alba Bark Extract • Allantoin • Dipotassium Glycyrrhizate • Caprylyl Glycol • Polyglyceryl-10 Laurate • Dipentaerythrityl Tri-Polyhydroxystearate • Ethylhexyl Methoxycrylene • Hydrogenated Lecithin • Bis-Glyceryl Ascorbate • Disodium EDTA • Sorbic Acid • Xanthan Gum • Phenoxyethanol
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 Side-by-side
Ingredients that are highlighted in purple are present in both products.
Learn more about what what Com. / Irr. ratings are
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. Talk about multi-purpose! If you see this, drink a glass of water. Stay hydrated!
Learn more about WaterPaula's Choice 1% Retinol Booster contains this as ingredient number 1.
Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide contains this as ingredient number 1.
Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.
A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.
As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.
Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.
Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.
In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.
This ingredient is organic, colorless, odorless, and non-toxic.
Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
Learn more about GlycerinPaula's Choice 1% Retinol Booster contains this as ingredient number 3.
Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide contains this as ingredient number 2.
Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
- It is a solvent, meaning that it helps to dissolve other ingredients. This also enhances the absorption of the product into one's skin.
- It is a humectant, which means that it helps attract moisture into the skin.
- It helps improve product application.
Overall, Butylene Glycol is a safe and well-rounded ingredient. It is unlikely to irritate skin, and works well with pretty much all other ingredients.
Paula's Choice 1% Retinol Booster contains this as ingredient number 7.
Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide contains this as ingredient number 3.
Retinol is a form of Vitamin A and proven to help with anti-aging.
It promotes collagen production, increases new cell turnoever, and protects your skin as an antioxidant.
Retinol boosts collagen production and increases cell turnover. This makes retinol effective in removing wrinkles, fading dark spots, and reducing the appearance of pores.
Retinol is less effective when exposed to sun. Be sure to look for appropriate packaging to keep your retinol potent.
Using retinol and retinoids will increase sun-sensitivity in the first few weeks of use. 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 RetinolPaula's Choice 1% Retinol Booster contains this as ingredient number 10.
Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide contains this as ingredient number 23.
Ceramide NP is a type of ceramide.
Ceramides are intercellular lipids naturally found in our skin that bonds dead skin cells together to create a barrier. They are known for their ability to hold water and thus are a great ingredient for dry skin.
Ceramides are an important building block for our skin barrier. A stronger barrier helps the skin look more firm and hydrated. By bolstering the skin ceramides act as a barrier against irritating ingredients. This can help with inflammation as well.
If you would like to eat ceramides, sweet potatoes contain a small amount.
Read more about other common types of ceramides here: Ceramide AP Ceramide EOP
Learn more about Ceramide NPPaula's Choice 1% Retinol Booster contains this as ingredient number 12.
Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide contains this as ingredient number 14.
Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.
It is a common ingredient in many products, especially those designed to hydrate skin. The primary benefits are retaining moisture, skin softening, and promoting a healthy skin barrier.
Though Caprylyl Glycol is an alcohol derived from fatty acids, it is not the kind that can dry out skin.
This ingredient is also used as a preservative to extend the life of products. It has slight antimicrobial properties.
Learn more about Caprylyl GlycolPaula's Choice 1% Retinol Booster contains this as ingredient number 20.
Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide contains this as ingredient number 28.
Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent germ and 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.
Paula's Choice 1% Retinol Booster contains this as ingredient number 29.
Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide contains this as ingredient number 43.
Here's what our community thinks of the ingredients in these two products.
Paula's Choice 1% Retinol Booster 29 ingredients
Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide 43 ingredients
Usage
Here's some more info on how this product is used by our community.
When to use
Paula's Choice 1% Retinol Booster 29 ingredients
Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide 43 ingredients
Reviews
Here's what our community thinks
Paula's Choice 1% Retinol Booster 29 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...
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 the retinol, using it every other day. Combining it with a moisturiser and a good hydration serum in the morning makes this a great product for your skin.
I highly recommend combining this with Missha Time Revolution Night Repair. It did wonders for my skin!
Alternatives
Our Dupe Finder has found 1 potential alternatives that have similar ingredients to Paula's Choice 1% Retinol Booster.
See 1 alternativesOur Dupe Finder has found 19 potential alternatives that have similar ingredients to Kiehl's Micro-Dose Anti-Aging Retinol Serum with Ceramides and Peptide.
See 19 alternatives
