The Agency Milky Hydration Concentrate Versus Hydropeptide Power Serum
Updated on August 17, 2025
Overview
What they are
These products are both vegan, cruelty-free, and reef safe serums. They have a total of 13 ingredients in common
Cool Features
They both contain hyaluronic acid and peptides
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin, sensitive skin, reducing pores, scar healing and better texture
Free From
They both do not contain any harsh alcohols, common allergens, oils, parabens or sulfates
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
The Agency Milky Hydration Concentrate 36 ingredients
Hydropeptide Power Serum 51 ingredients
What's inside
What's inside
At a glance
Click on any of the items below to learn more
The Agency Milky Hydration Concentrate 36 ingredients
Hydropeptide Power Serum 51 ingredients
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningGlycerin
Humectant
Caprylic/Capric Triglyceride
Masking
Urea
Buffering
Butylene Glycol
Humectant
Sodium Citrate
BufferingPropanediol
Solvent
1,2-Hexanediol
Skin Conditioning
Isopentyldiol
Humectant
Arachidyl Alcohol
EmollientCitric Acid
Buffering
Cetearyl Alcohol
Emollient
Pentylene Glycol
Skin ConditioningDimethicone
Emollient
Hyaluronic Acid
Humectant
Sodium Hyaluronate
Humectant
Sodium Hyaluronate Crosspolymer
Humectant
Hydrolyzed Sodium Hyaluronate
Skin Conditioning
Sodium Acetylated Hyaluronate
Humectant
Copper Tripeptide-1
Skin Conditioning
Palmitoyl Tetrapeptide-7
Skin Conditioning
Palmitoyl Tripeptide-1
Skin Conditioning
Butyrospermum Parkii Butter
Skin Conditioning
Behenyl Alcohol
Emollient
Coco-Glucoside
CleansingArachidyl Glucoside
EmulsifyingPolyglutamic Acid
Skin Conditioning
Hydroxyacetophenone
Antioxidant
Polyacrylate Crosspolymer-6
Emulsion StabilisingXanthan Gum
EmulsifyingAloe Barbadensis Leaf Juice
Skin Conditioning
Sodium Phytate
Cetyl Hydroxyethylcellulose
Emulsion StabilisingRutin
Antioxidant
Ethylhexylglycerin
Skin ConditioningPhaseolus Lunatus Seed Extract
EmollientWater, Glycerin, Caprylic/Capric Triglyceride, Urea, Butylene Glycol, Sodium Citrate, Propanediol, 1,2-Hexanediol, Isopentyldiol, Arachidyl Alcohol, Citric Acid, Cetearyl Alcohol, Pentylene Glycol, Dimethicone, Hyaluronic Acid, Sodium Hyaluronate, Sodium Hyaluronate Crosspolymer, Hydrolyzed Sodium Hyaluronate, Sodium Acetylated Hyaluronate, Copper Tripeptide-1, Palmitoyl Tetrapeptide-7, Palmitoyl Tripeptide-1, Butyrospermum Parkii Butter, Behenyl Alcohol, Coco-Glucoside, Arachidyl Glucoside, Polyglutamic Acid, Hydroxyacetophenone, Polyacrylate Crosspolymer-6, Xanthan Gum, Aloe Barbadensis Leaf Juice, Sodium Phytate, Cetyl Hydroxyethylcellulose, Rutin, Ethylhexylglycerin, Phaseolus Lunatus Seed Extract
Water
Skin ConditioningGlycerin
Humectant
Lactococcus Ferment Lysate
Skin ConditioningButylene Glycol
Humectant
Propanediol
Solvent
Diethylhexyl Carbonate
EmollientIsopentyldiol
Humectant
Pentylene Glycol
Skin ConditioningDiheptyl Succinate
EmollientCaprylyl Glycol
Emollient
Hydroxyacetophenone
Antioxidant
Olea Europaea Fruit Unsaponifiables
Antioxidant
Sodium Stearoyl Glutamate
CleansingCetearyl Alcohol
Emollient
Glyceryl Stearate
Emollient
Potassium Olivoyl Hydrolyzed Oat Protein
CleansingLysolecithin
EmulsifyingSclerotium Gum
Emulsion StabilisingHexapeptide-11
Skin Conditioning
Tetrahexyldecyl Ascorbate
Antioxidant
1,2-Hexanediol
Skin Conditioning
Capryloyl Glycerin/Sebacic Acid Copolymer
Skin ConditioningPhenylpropanol
Masking
Sorbitan Laurate
Emulsifying
Pullulan
Xanthan Gum
EmulsifyingCaprylic/Capric Triglyceride
Masking
Glyceryl Oleate
Emollient
Glycine Soja Seed Extract
Skin Conditioning
Anogeissus Leiocarpus Bark Extract
Skin ProtectingCitrus Limon Peel Extract
EmollientPalmitoyl Hexapeptide-19
Skin Conditioning
Sodium Phytate
Hydroxyethylcellulose
Emulsion StabilisingSodium Hyaluronate
Humectant
Acetyl Dipeptide-1 Cetyl Ester
Skin Conditioning
Citrus Aurantium Dulcis Peel Extract
Emulsion Stabilising
Citrus Paradisi Fruit Extract
Skin ConditioningDipeptide Diaminobutyroyl Benzylamide Diacetate
Skin Conditioning
Citrus Aurantium Bergamia Fruit Extract
Skin ConditioningCitrus Aurantifolia Peel Extract
Cleansing
Citrus Nobilis Fruit Extract
MaskingCitrus Tangerina Peel Extract
AstringentAcetyl Hexapeptide-30
Skin Conditioning
Barosma Betulina Leaf Extract
Perfuming
Vanilla Planifolia Fruit Extract
Skin Conditioning
Vitis Vinifera Fruit Extract
Skin ConditioningPalmitoyl Dipeptide-5 Diaminobutyroyl Hydroxythreonine
Skin Conditioning
Palmitoyl Tripeptide-5
Skin Conditioning
Tetradecyl Aminobutyroylvalylaminobutyric Urea Trifluoroacetate
Skin ConditioningTocopherol
Antioxidant
Water, Glycerin, Lactococcus Ferment Lysate, Butylene Glycol, Propanediol, Diethylhexyl Carbonate, Isopentyldiol, Pentylene Glycol, Diheptyl Succinate, Caprylyl Glycol, Hydroxyacetophenone, Olea Europaea Fruit Unsaponifiables, Sodium Stearoyl Glutamate, Cetearyl Alcohol, Glyceryl Stearate, Potassium Olivoyl Hydrolyzed Oat Protein, Lysolecithin, Sclerotium Gum, Hexapeptide-11, Tetrahexyldecyl Ascorbate, 1,2-Hexanediol, Capryloyl Glycerin/Sebacic Acid Copolymer, Phenylpropanol, Sorbitan Laurate, Pullulan, Xanthan Gum, Caprylic/Capric Triglyceride, Glyceryl Oleate, Glycine Soja Seed Extract, Anogeissus Leiocarpus Bark Extract, Citrus Limon Peel Extract, Palmitoyl Hexapeptide-19, Sodium Phytate, Hydroxyethylcellulose, Sodium Hyaluronate, Acetyl Dipeptide-1 Cetyl Ester, Citrus Aurantium Dulcis Peel Extract, Citrus Paradisi Fruit Extract, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Citrus Aurantium Bergamia Fruit Extract, Citrus Aurantifolia Peel Extract, Citrus Nobilis Fruit Extract, Citrus Tangerina Peel Extract, Acetyl Hexapeptide-30, Barosma Betulina Leaf Extract, Vanilla Planifolia Fruit Extract, Vitis Vinifera Fruit Extract, Palmitoyl Dipeptide-5 Diaminobutyroyl Hydroxythreonine, Palmitoyl Tripeptide-5, Tetradecyl Aminobutyroylvalylaminobutyric Urea Trifluoroacetate, Tocopherol
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
1,2-Hexanediol is a synthetic liquid and another multi-functional powerhouse.Â
It is a:
- Humectant, drawing moisture into the skin
- Emollient, helping to soften skin
- Solvent, dispersing and stabilizing formulas
- Preservative booster, enhancing the antimicrobial activity of other preservativesÂ
Butylene 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 GlycolThis ingredient is an emollient, solvent, and texture enhancer. It is considered a skin-softener by helping the skin prevent moisture loss.
It helps thicken a product's formula and makes it easier to spread by dissolving clumping compounds.
Caprylic Triglyceride is made by combining glycerin with coconut oil, forming a clear liquid.
While there is an assumption Caprylic Triglyceride can clog pores due to it being derived from coconut oil, there is no research supporting this.
Learn more about Caprylic/Capric TriglycerideCetearyl alcohol is a mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is mainly used as an emulsifier. Emulsifiers help prevent the separation of oils and products. Due to its composition, it can also be used to thicken a product or help create foam.
Cetearyl alcohol is an emollient. Emollients help soothe and hydrate the skin by trapping moisture.
Studies show Cetearyl alcohol is non-toxic and non-irritating. The FDA allows products labeled "alcohol-free" to have fatty alcohols.
This ingredient is usually derived from plant oils such as palm, vegetable, or coconut oils. There is debate on whether this ingredient will cause acne.
Due to the fatty acid base, this ingredient may not be Malassezia folliculitis safe.
Learn more about Cetearyl AlcoholGlycerin 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 GlycerinHydroxyacetophenone is antioxidant with skin conditioning and soothing properties. It also boosts the efficiency of preservatives.
This ingredient is not irritating or sensitizing.
Isopentyldiol is a synthetic solvent, humectant, and emollient.
Humectants have the ability to attract and hold water while emollients create a thin film to prevent water from evaporating. This combination keeps your skin and hair soft and hydrated. Plus, isopentyldiol does not leave a sticky feeling behind.
As a surfactant, isopentyldiol is a hydrotrope. Hydrotropes help surfactants (cleansing agents) dissolve into water.
According to the manufacturer, using this ingredient with sorbitol boosts skin hydration and helps close cuticles of damaged hair.
This ingredient is water-soluble.
Learn more about IsopentyldiolPentylene 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 GlycolPropanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.Â
It’s often used to:
Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.
Learn more about PropanediolSodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.
Like hyaluronic acid, it is great at holding water and acts as a humectant. This makes it a great skin hydrating ingredient.
Sodium Hyaluronate is naturally occurring in our bodies and is mostly found in eye fluid and joints.
These are some other common types of Hyaluronic Acid:
Learn more about Sodium HyaluronateSodium Phytate is the synthetic salt form of phytic acid. Phytic acid is an antioxidant and can be found in plant seeds.
Sodium Phytate is a chelating agent. Chelating agents help prevent metals from binding to water. This helps stabilize the ingredients and the product.
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 WaterXanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.
On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.
Xanthan gum is a pretty common and great ingredient. It is a natural, non-toxic, non-irritating ingredient that is also commonly used in food products.
Learn more about Xanthan GumIngredient Ratings
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