MAC Cosmetics MAC Prep + Prime 24-Hour Extend Eye Base Review

MAC Cosmetics MAC Prep + Prime 24-Hour Extend Eye Base
5.3
/ 10
Moisturizing
0.6 Humectancy icon Humectancy
10.0 Occlusivity icon Occlusivity
Review

Does MAC Cosmetics MAC Prep + Prime 24-Hour Extend Eye Base Work?

 
According to CreamScan AI's analysis of the ingredient list, here’s what MAC Cosmetics MAC Prep + Prime 24-Hour Extend Eye Base has to offer:
 
✅ Strong occlusive moisturizing. This exceptionally occlusive moisturizer, ideal for dry and very dry skin, has a moderate moisturizing rating of 5.3 out of 10, impaired by the lack of humectants.

  

Key Benefits of MAC Cosmetics MAC Prep + Prime 24-Hour Extend Eye Base

 
These are the key benefits you can expect from using MAC Cosmetics MAC Prep + Prime 24-Hour Extend Eye Base:
 

🔵🔵🔵 Exceptionally Rich Moisturizer with the Right Occlusivity for Very Dry Skin

According to CreamScan analysis, MAC Cosmetics MAC Prep + Prime 24-Hour Extend Eye Base is quite moisturizing, with a moisturizing rating of 5.3 out of 10.

Is it more humectant or occlusive? Significantly more occlusive. It has a low Humectancy of 0.6 out of 10 and a maximum Occlusivity of 10 out of 10, primarily due to the high content of Dimethicone (est. ≈45.0%) and Trihydroxystearin (est. ≈4.0%).

This type of product, when used as a standalone moisturizer, can deliver an exceptional level of occlusive hydration that is adequate for dry to very skin. The occlusive profile of MAC Cosmetics MAC Prep + Prime 24-Hour Extend Eye Base suggests a rich, thick texture, making it perfectly suited for dry skin.

Please refer to the Ratings section below for details of the moisturizing rating calculation.

📌 Please note that this is not a complete list of benefits. We are in the process of enhancing our AI model to incorporate anti-pigmentation, exfoliation and anti-acne ratings.

Things to Be Aware Of: MAC Cosmetics MAC Prep + Prime 24-Hour Extend Eye Base

 
CreamScan AI identified a few things to consider before adding MAC Cosmetics MAC Prep + Prime 24-Hour Extend Eye Base to your skincare routine:
 

⚠️ Best for Very Dry Skin - May Be Too Thick for Other Skin Types

With exceptional occlusivity, this product is optimal for moisturizing dry and very dry skin but may be too thick for other skin types, including normal, and especially combination and oily skin.

If you have oily, combination, or normal skin and are considering purchasing this product for the first time, it might be a good idea to try a sample before buying.

⚠️ Needs to Be Paired with Extra Humectants for Optimal Moisturizing Efficacy

An ideal moisturizer for any skin type should balance the right level of occlusivity (depending on skin type) with a significant amount of humectants, while MAC Cosmetics MAC Prep + Prime 24-Hour Extend Eye Base contains a low level of humectants.

People with dry skin would definitely benefit from adding more humectants to their moisturizing routine beyond what this product offers. If this is your only moisturizer, it may be worth including a humectant-rich product, such as a serum, in your skincare routine.

Pros & Cons of MAC Cosmetics MAC Prep + Prime 24-Hour Extend Eye Base

 
Here’s an overview of the pros and cons of MAC Cosmetics MAC Prep + Prime 24-Hour Extend Eye Base to help you decide if it’s the right choice for your skincare routine:
 

🟩 Pros:

Exceptionally rich moisturizer with the right level of occlusivity to moisturize dry to very dry skin
 

⭕ Cons: 

⚠️ May feel too rich and thick on skin types other than dry
⚠️ Only if used as a standalone moisturizer - needs to be paired with extra humectants for optimal moisturizing efficacy
   

Summary: MAC Cosmetics MAC Prep + Prime 24-Hour Extend Eye Base

 
Based on the ingredient list analysis, CreamScan AI suggests that MAC Cosmetics MAC Prep + Prime 24-Hour Extend Eye Base
, as a moisturizer, provides an exceptional level of occlusive hydration that is adequate for dry to very skin, delivered in a rich, thick texture.
 
That said, there are some things about MAC Cosmetics MAC Prep + Prime 24-Hour Extend Eye Base worth noting.
 
With its high occlusivity, MAC Cosmetics MAC Prep + Prime 24-Hour Extend Eye Base is ideal for dry skin but may feel too thick on other skin types. If you have oily, combination, or normal skin, it’s a good idea to try a sample before purchasing.
 
If you use this product as your only moisturizer in a routine, please note that it contains only a small amount of humectants. Regardless of your skin type, adding extra humectants can enhance optimal moisturizing efficacy. Therefore, it may be worth pairing MAC Cosmetics MAC Prep + Prime 24-Hour Extend Eye Base with a humectant-rich product, such as a serum, in your skincare routine.
 
❗️ Fact check. At CreamScan, we are committed to accuracy and fairness. If you spot any errors or something that doesn’t seem right, please click here to let us know. We regularly update the ingredient lists and monitor the latest research on ingredient efficacy to ensure that our information remains as complete and precise as possible.

 

Ingredients

Est. % Ingredient Origin Functions
45
22
11
6
4
3
2
1.5
1
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
Est. %
Dimethicone
Function:
Origin:
Isododecane
Function:
Origin:
Talc
Function:
Origin:
Dimethicone Silylate
Function:
Origin:
Trihydroxystearin
Function:
Origin:
Disteardimonium Hectorite
Function:
Origin:
Kaolin
Function:
Origin:
Hydrogenated Polyisobutene
Function:
Origin:
Polyethylene
Function:
Origin:
VP/Eicosene Copolymer
Function:
Origin:
Trioctyldodecyl Citrate
Function:
Origin:
Tocopheryl Acetate
Function:
Origin:
Lecithin
Function:
Origin:
Bisabolol
Function:
Origin:
Triethylhexanoin
Function:
Origin:
Silica
Function:
Origin:
Alumina
Function:
Origin:
Propylene Carbonate
Function:
Origin:
Ethylene/Methacrylate Copolymer
Function:
Origin:
Sorbitan Sesquioleate
Function:
Origin:
Caprylyl Glycol
Function:
Origin:
Stearic Acid
Function:
Origin:
Glycyrrhetinic Acid
Function:
Origin:
PEG-40 Stearate
Function:
Origin:
Isopropyl Titanium Triisostearate
Function:
Origin:
Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate
Function:
Origin:
Mica
Function:
Origin:
Titanium Dioxide (CI 77891)
Function:
Origin:
Iron Oxides (CI 77491)
Function:
Origin:
Iron Oxides (CI 77492)
Function:
Origin:
Iron Oxides (CI 77499)
Function:
Origin:
Bismuth Oxychloride (CI 77163)
Function:
Origin:

Ratings

All humectants
0.6
0.3
0.3
Benchmark
10
All occlusives
49.9
45.0
4.0
0.3
0.3
0.3
Benchmark
20
Moisturizing rating
5.3
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 0.6 10
0.6
0.3
0.3
Occlusivity All occlusives 49.9 20
10.0
45.0
4.0
0.3
0.3
0.3
Moisturizing rating
5.3
Ingredient Est. % Benchmark Humectancy
0.3
0.3
All humectants 0.6 10
0.6
All humectants
0.6
0.3
0.3
Benchmark
10
Ingredient Est. % Benchmark Occlusivity
45
4
0.3
0.3
0.3
All occlusives 49.9 20
10.0
All occlusives
49.9
45.0
4.0
0.3
0.3
0.3
Benchmark
20
Ingredient
Ingredient anti-wrinkle power
when present at, %
in this formula est. %
Rating
None
Total
0
None
Anti-wrinkle rating
0
Ingredient Est. % Benchmark
Rich in Antioxidants
0.3
0.3
All antioxidants 0.6 3 No
All antioxidants
0.6
Tocopheryl Acetate
0.3
Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate
0.3
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
0.3
0.3
All soothing 0.6 5 No
All soothing
0.6
0.3
0.3
Benchmark
5

Ingredients explained

Dimethicone
Est. %45
Function
Origin
DimethiconeThe most common silicone in skincare. It forms a silky, smooth film on the skin’s surface and can help to prevent water loss. It also aids in wound healing and can treat and soften scars. Dimethicone is considered to be very safe for use.
Isododecane
Est. %22
Function
Origin
IsododecaneAn emollient derived from petroleum with high spreadability. It is often used as a replacement for oils and silicones because it leaves no residue behind on the skin. When a product is labeled as “oil-free” it may contain isododecane instead of heavier oils.
Talc
Est. %11
Function
Origin
TalcA mineral powder used as a base material for powders, make-up, and pastes that absorbs sweat and oils very well. It is also often used in baby powders. Talc should never be applied to skin with a damaged lipid barrier (e.g. wounds and burns).
Dimethicone Silylate
Est. %6
Function
Origin
Dimethicone Silylate
Trihydroxystearin
Est. %4
Function
Origin
Trihydroxystearin
Disteardimonium Hectorite
Est. %3
Function
Origin
Disteardimonium HectoriteA clay ingredient that functions primarily as a viscosity controlling agent that thickens all types of formulas. Disteardimonium hectorite imparts a smooth, velvety feel, making it a luxurious addition to any formula.
Kaolin
Est. %2
Function
Origin
KaolinA type of mineral clay milled into a white, very fine powder. It is able to absorb sweat and oil, which then helps to keep the skin matte. The larger particles of kaolin are used in skin scrubs as an abrasive ingredient.
Hydrogenated Polyisobutene
Est. %1.5
Function
Origin
Hydrogenated PolyisobuteneA viscous liquid that makes a great oil base due to its smooth sensorial profile. It has emollient features, including good spreadability and little tack upon application. It also has the added benefit of being able to thicken products.
Polyethylene
Est. %1
Function
Origin
PolyethyleneCommonly used in dense plastic packaging, its primary function in skincare is as a film-forming agent, which protects the product from being easily rinsed away by water or sweat. It also controls viscosity by increasing the thickness of oily products.
VP/Eicosene Copolymer
Est. %0.3
Function
Origin
VP/Eicosene Copolymer
Trioctyldodecyl Citrate
Est. %0.3
Function
Origin
Trioctyldodecyl Citrate
Tocopheryl Acetate
Est. %0.3
Function
Origin
Tocopheryl Acetate

An antioxidant derivative of tocopherol (vitamin E). It helps to protect cells from free radicals and UV damage through the conversion to active vitamin E in the skin. It is more stable than tocopherol.

Lecithin
Est. %0.3
Function
Origin
LecithinA humectant, emollient, and emulsifier best suited for water-in-oil emulsions. Lecithin can come from sunflowers, soy, and eggs. The downside to lecithin is that it causes an extra burden on the formula’s preservative because it is nutritious.
Bisabolol
Est. %0.3
Function
Origin
Bisabolol

An anti-inflammatory compound found naturally in German chamomile essential oil. It has a pleasant, sweet, and floral scent. Bisabolol also has soothing and anti-inflammatory properties but can cause an allergic reaction in more sensitive individuals.

Triethylhexanoin
Est. %0.3
Function
Origin
TriethylhexanoinAn occlusive and emollient ester of glycerin and a fatty acid. It is easily spreadable and does not leave a sticky after-feel.
Silica
Est. %0.3
Function
Origin
SilicaA widely used cosmetic ingredient with the same chemical composition as the sand found on beaches. A common function of silica is its ability to control viscosity. In certain chemical forms, it can effectively thicken cream-style products.
Alumina
Est. %0.3
Function
Origin
AluminaA mineral derived from the metal ore known as aluminum. It is commonly used as an abrasive and also acts as a thickening viscosity controlling agent (and thus as a bulking agent). Alumina is also a great opacifier.
Propylene Carbonate
Est. %0.3
Function
Origin
Propylene CarbonateA derivative of propylene glycol that is used most frequently as a solvent. Additionally, propylene carbonate serves as a viscosity controlling agent reducing the thickness of the products it is added to.
Ethylene/Methacrylate Copolymer
Est. %0.3
Function
Origin
Ethylene/Methacrylate Copolymer
Sorbitan Sesquioleate
Est. %0.3
Function
Origin
Sorbitan SesquioleateA natural liquid ingredient that is yellow to amber in color and completely transparent. It supports oil and water mixtures and disperses minerals into oils.
Caprylyl Glycol
Est. %0.3
Function
Origin
Caprylyl GlycolAn emollient that improves product spreadability and offers a silky feel on the skin. It also acts as a preservative booster that improves the efficacy of other preservatives. According to the manufacturer, it is also a humectant moisturizer.
Stearic Acid
Est. %0.3
Function
Origin
Stearic AcidA saturated fatty acid found in vegetable butter and animal fats. It is an occlusive moisturizing and emollient ingredient and also helps to maintain the barrier function of the skin.
Glycyrrhetinic Acid
Est. %0.3
Function
Origin
Glycyrrhetinic AcidA compound derived from licorice root. It is a powerful anti-inflammatory ingredient with some anti-pigment properties.
PEG-40 Stearate
Est. %0.3
Function
Origin
PEG-40 StearateThis PEG, or polyethylene glycol, is excellent at emulsifying water and oil together to form oil-in-water emulsions. Due to its water-loving nature, PEG-40 stearate can also act as a cleansing agent.
Isopropyl Titanium Triisostearate
Est. %0.3
Function
Origin
Isopropyl Titanium Triisostearate
Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate
Est. %0.3
Function
Origin
Pentaerythrityl Tetra-di-t-butyl HydroxyhydrocinnamateAn antioxidant that protects vulnerable ingredients from the damage caused by ultraviolet radiation, which can also lead to the generation of damaging free radical species.
Mica
Est. %0.3
Function
Origin
MicaA mineral powder made up of silicates with several functions (the main one being as a colorant). It has a shimmery appearance, making it highly desirable in certain cosmetic products. Mica also helps the product to apply more smoothly.
Titanium Dioxide (CI 77891)
Est. %0.3
Function
Origin
Titanium Dioxide (CI 77891)One of two the most commonly used mineral sunscreens. It can absorb UV light, including UVB – which causes burning, tanning, and even skin cancer. Also used as a colorant, titanium dioxide gives a product a bright white color.
Iron Oxides (CI 77491)
Est. %0.3
Function
Origin
Iron Oxides (CI 77491)A red colorant also known as red iron oxide. This is an EU-approved colorant used in a wide variety of products.
Iron Oxides (CI 77492)
Est. %0.3
Function
Origin
Iron Oxides (CI 77492)Also known as iron (III) oxide, this ingredient is a yellow-colored pigment that can either be derived from minerals or produced synthetically. It adds yellow tones to cosmetic products.
Iron Oxides (CI 77499)
Est. %0.3
Function
Origin
Iron Oxides (CI 77499)A black colorant also known as black iron oxide used in a wide range of skincare products.
Bismuth Oxychloride (CI 77163)
Est. %0.3
Function
Origin
Bismuth Oxychloride (CI 77163)An inorganic colorant that gives off a pearly white sheen. Its appearance is a result of light reflecting and refracting through the layers it forms.