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Updated on October 26, 2023

Overview

What they are

These products are both reef safe eye primers. They have a total of 6 ingredients in common

Cool Features

They both contain exfoliants and Vitamin E

Suited For

They're both likely to be good for brightening skin

Free From

They both do not contain any harsh alcohols, common allergens, fragrances, parabens or sulfates

What's Inside

They both contain silicones

We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.

Mac Cosmetics Prep + Prime 24-Hour Extend Eye Base
Revolution Beauty Rehab Line Fix Under Eye Primer

Ingredient Info

Click any item below to learn more and see relevant ingredients

At a glance

Click on any of the items below to learn more

Notable Ingredients

Benefits

Concerns

Notable Ingredients

Benefits

Concerns

Ingredients Side-by-side

found in both products
Prep + Prime 24-Hour Extend Eye Base
Dimethicone Emollient, Skin Conditioning, Skin Protecting
1 / 0
Silicon

Dimethicone is a silicone used for making products smooth and silky. It also has the added benefit of sealing in hydration. The amount of dimethicone found in beauty products is considered safe and non-comedogenic, meaning it won't clog pores.

1 Com. / 0 Irr.
Very Disliked Full details ->
Isododecane Emollient, Solvent

Isododecane is a fragrance, emollient, and solvent.

Disliked Full details ->
Talc Abrasive, Absorbent, Skin Protecting
1 / 0
Exfoliant

Talc is a clay mineral. It helps absorb moisture and improve the texture of products. Like other types of clay, Talc can have a slight exfoliating effect on skin. Talc can be added to increase the volume of products.

1 Com. / 0 Irr.
Very Disliked Full details ->
Dimethicone Silylate

We don't have a description for Dimethicone Silylate.

Unknown Full details ->
Trihydroxystearin Skin Conditioning
Not safe for Fungal Acne

This ingredient comes from Hydroxystearic Acid, a fatty acid, and glycerin. It is used to thicken oils.

Very Disliked Full details ->
Disteardimonium Hectorite Stabilising

Disteardimonium Hectorite comes from the clay mineral named hectorite. It is used to add thickness to a product.

Disliked Full details ->
Kaolin Abrasive, Absorbent, Cosmetic Colorant
0 / 0
Exfoliant  •  2 Benefits

Kaolin is a clay. It is used for oil control and to help minimize pores. Like other clays, kaolin has the ability to absorb excess sebum or oil. This can help clean out pores and mattify the skin.

0 Com. / 0 Irr.
Hydrogenated Polyisobutene Emollient, Skin Conditioning
1 / 2

Hydrogenated Polyisobutene is a synthetic polymer. Polymers are compounds with high molecular weight. Hydrogenated Polyisobutene is an emollient and texture enhancer.

1 Com. / 2 Irr.
Polyethylene Abrasive
Exfoliant

Polyethylene is a synthetic ingredient that helps the skin retain moisture. It is a polymer.

Very Disliked Full details ->
Trioctyldodecyl Citrate Emollient, Skin Conditioning

We don't have a description for Trioctyldodecyl Citrate.

Unknown Full details ->
Tocopheryl Acetate Antioxidant, Skin Conditioning
0 / 0
Vitamin E  •  Antioxidant  •  Helps brighten skin

Tocopheryl Acetate is AKA Vitamin E. It is an antioxidant and protects your skin from free radicals. Free radicals damage the skin by breaking down collagen.

0 Com. / 0 Irr.
Lecithin Emollient, Emulsifying, Skin Conditioning

Lecithin is a term for a group of substances found in plants, animals, and humans. They are made up of mixture of fatty acids. These fatty acids usually are a mixture of phosphoric acid's choline ester connected to stearic, oleic, and palmitic acids. Most lecithins are created from plant ingredients scuh as sunflower.

Disliked Full details ->
Bisabolol Masking, Skin Conditioning, Soothing
Helps reduce irritation

Bisabolol is pimarily used to add fragrance to a product. However, it is also famous for helping soothe skin.

Triethylhexanoin Masking, Skin Conditioning

Triethylhexanoin is created from glycerin and 2-ethylhexanoic acid. It is a solvent and emollient.

Silica Abrasive, Absorbent
Exfoliant  •  2 Concerns

Silica is a mineral naturally found in our skin. It helps to thicken and smooth the texture of a product. It also acts as an agent for other ingredients by increasing the absorption of other ingredients into the skin.

Disliked Full details ->
Alumina Abrasive, Absorbent
Exfoliant

Alumina is another name for the compound aluminum oxide. It is used as a thickener, absorbent, and abrasive.

Very Disliked Full details ->
Propylene Carbonate Solvent

This ingredient is a solvent. It helps dissolve active ingredients and alter the texture of products.

Unknown Full details ->
Ethylene Oxide

This ingredient is volatile gas with a sweet odor. It is often used to make other ingredients less harsh and sterilize medical equipment.

Unknown Full details ->
Sorbitan Sesquioleate Emulsifying
0-1 / 0
2 Concerns

Sorbitan Sesquioleate is derived from sorbitol and oleic acid. It is an emulsifier and prevents ingredients from separating.

0-1 Com. / 0 Irr.
Very Disliked Full details ->
Caprylyl Glycol Emollient, Humectant, Skin Conditioning

Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.

Stearic Acid Cleansing, Emulsifying, Emulsion Stabilising
2-3 / 0
2 Concerns

Stearic Acid is a fatty acid. It is an emollient, emulsifier, and texture enhancer.

2-3 Com. / 0 Irr.
Very Disliked Full details ->
Glycyrrhetinic Acid Skin Conditioning

We don't have a description for Glycyrrhetinic Acid.

Peg-40 Stearate Emulsifying
Not safe for Fungal Acne

Peg-40 Stearate is a waxy solid made up of polyethylene glycol and stearic acid. It is an emulsifier and cleanser. Emulsifiers help oils and water mix.

Unknown Full details ->
Isopropyl Titanium Triisostearate Emollient, Emulsifying
Not safe for Fungal Acne

Isopropyl Titanium Triisostearate isn't fungal acne safe.

Unknown Full details ->
Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate Antioxidant
Antioxidant

Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate (long name, huh?) is a synthetic antioxidant.

Mica Cosmetic Colorant
May worsen Eczema

Mica refers to a group of silicate minerals. Mica crystals are easily split to give products a shimmer. These crystals are able to reflect light to temporarily give your skin a glowy look.

Very Disliked Full details ->
CI 77891 Cosmetic Colorant

Ci 77891 is a white pigment from Titanium dioxide. It is naturally found in minerals such as rutile and ilmenite.

Disliked Full details ->
CI 77499 Cosmetic Colorant

Ci 77499 is also hydrated iron III oxide. It is created from mixing red and black iron oxides. This helps give shades of darkness to a product.

CI 77163 Cosmetic Colorant

This synthetic powder is used to add a pearly/white color in cosmetics.

Disliked Full details ->
Rehab Line Fix Under Eye Primer
Dimethicone Emollient, Skin Conditioning, Skin Protecting
1 / 0
Silicon

Dimethicone is a silicone used for making products smooth and silky. It also has the added benefit of sealing in hydration. The amount of dimethicone found in beauty products is considered safe and non-comedogenic, meaning it won't clog pores.

1 Com. / 0 Irr.
Very Disliked Full details ->
Dimethicone Crosspolymer Emulsion Stabilising

Dimethicone Crosspolymer is a silicone created by modifying dimethicone with hydrocarbon side chains. Due to its large size, it does not penetrate skin. It is considered non-occlusive.

Very Disliked Full details ->
Octyldodecanol Emollient, Masking

Octyldodecanol is a fatty alcohol. It is primarily used to enhance the texture of products.

Disliked Full details ->
Isohexadecane Emollient, Skin Conditioning, Solvent

Isohexadecane is added to enhance texture, emulsify, and to help cleanse. It is an isoparrafin. It is a component of petrolatum.

Phenyl Trimethicone Skin Conditioning
Silicon

Phenyl Trimethicone is a silicon-based polymer. It is derived from silica.

Disliked Full details ->
Ozokerite Emulsion Stabilising

Ozokerite is a naturally occuring mineral wax. In cosmetics, ozokerite is used as a texture enhancer.

Very Disliked Full details ->
Silica Abrasive, Absorbent
Exfoliant  •  2 Concerns

Silica is a mineral naturally found in our skin. It helps to thicken and smooth the texture of a product. It also acts as an agent for other ingredients by increasing the absorption of other ingredients into the skin.

Disliked Full details ->
Mica Cosmetic Colorant
May worsen Eczema

Mica refers to a group of silicate minerals. Mica crystals are easily split to give products a shimmer. These crystals are able to reflect light to temporarily give your skin a glowy look.

Very Disliked Full details ->
Synthetic Sapphire

We don't have a description for Synthetic Sapphire.

Unknown Full details ->
Ethylhexyl Palmitate Emollient
2-3 / 0
3 Concerns

Ethylhexyl Palmitate is created from 2-ethylhexyl alcohol and palmitic acid. It is a fatty acid ester.

2-3 Com. / 0 Irr.
Very Disliked Full details ->
Cera Microcristallina Emulsion Stabilising
Not safe for Fungal Acne

Cera Microcristallina isn't fungal acne safe.

Very Disliked Full details ->
Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer

We don't have a description for Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer.

Very Disliked Full details ->
Helianthus Annuus Seed Oil Emollient, Masking, Skin Conditioning
0 / 0
Oil  •  Helps hydrate Dry Skin  •  2 Concerns

Helianthus Annuus Seed Oil is the oil derived from the seeds of a Sunflower. Sunflower seed oil is non-fragrant. It is an emollient, meaning it helps to soften the skin.

0 Com. / 0 Irr.
Disliked Full details ->
Hydrogenated Polyisobutene Emollient, Skin Conditioning
1 / 2

Hydrogenated Polyisobutene is a synthetic polymer. Polymers are compounds with high molecular weight. Hydrogenated Polyisobutene is an emollient and texture enhancer.

1 Com. / 2 Irr.
Tridecyl Trimellitate Emollient, Skin Conditioning

We don't have a description for Tridecyl Trimellitate.

Unknown Full details ->
Sorbitan Sesquioleate Emulsifying
0-1 / 0
2 Concerns

Sorbitan Sesquioleate is derived from sorbitol and oleic acid. It is an emulsifier and prevents ingredients from separating.

0-1 Com. / 0 Irr.
Very Disliked Full details ->
Tocopherol Antioxidant, Masking, Skin Conditioning
0-3 / 0-3
Vitamin E  •  Antioxidant  •  4 Benefits  •  May cause irritation

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.

0-3 Com. / 0-3 Irr.
Laminaria Digitata Powder Skin Conditioning

Laminaria Digitata Powder comes from the dark brown seaweed, Laminaria Digitata. It is a potent antioxidant, which also provides soothing and hydrating benefits.

Unknown Full details ->
Isocetyl Stearoyl Stearate Emollient, Skin Conditioning
Not safe for Fungal Acne

Isocetyl Stearoyl Stearate isn't fungal acne safe.

Unknown Full details ->
Tribehenin Emollient, Skin Conditioning
0 / 0
Not safe for Fungal Acne

Tribehenin comes from glycerin and behenic acid.

0 Com. / 0 Irr.
Very Disliked Full details ->
Sorbeth-30 Tetraisostearate Emulsifying
Not safe for Fungal Acne

Sorbeth-30 Tetraisostearate isn't fungal acne safe.

Unknown Full details ->
Palmitoyl Tripeptide-1 Skin Conditioning
Peptide  •  Not safe for Fungal Acne

Palmitoyl Tripeptide-1 is a 3-amino acid peptide. Peptides are building blocks for protein.

Sodium Hyaluronate Humectant, Skin Conditioning
0 / 0
Hyaluronic Acid

Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.

0 Com. / 0 Irr.
Glyceryl Behenate Emollient, Emulsifying
Not safe for Fungal Acne

Glyceryl Behenate is a fatty acid created from glycerin and behenic acid. It is an emollient and emulsifier.

Disliked Full details ->
Limnanthes Alba Seed Oil Skin Conditioning
Oil  •  Not safe for Fungal Acne

Limnanthes Alba Seed Oil is the oil extracted from the seeds of the meadowfoam plant. This oil is non-fragrant and is an emollient. As an emollient, meadowfoam seed oil helps soften and hydrate the skin.

Fullerenes Antimicrobial, Skin Conditioning

We don't have a description for Fullerenes.

Unknown Full details ->
Squalane Emollient, Skin Conditioning
1 / 0
Helps hydrate Dry Skin

Squalane is an emollient that helps the skin hold onto moisture. It's an oily liquid that occurs naturally in certain types of fish and plant oils.

1 Com. / 0 Irr.
CI 77491 Cosmetic Colorant

Ci 77491 is also hydrated iron III oxide. It's sole purpose is to give a red/pink hue to products.

CI 77492 Cosmetic Colorant

Ci 77492 is also hydrated iron III oxide. It's sole purpose is to give a yellow hue to products.

CI 77891 Cosmetic Colorant

Ci 77891 is a white pigment from Titanium dioxide. It is naturally found in minerals such as rutile and ilmenite.

Disliked Full details ->

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Emollient, Skin Conditioning, Skin Protecting
Very Disliked

Dimethicone is a silicone used for making products smooth and silky. It also has the added benefit of sealing in hydration. The amount of dimethicone found in beauty products is considered safe and non-comedogenic, meaning it won't clog pores.

Dimethicone has been found increase absorption in skin, boosting the benefits of other ingredients. While there is concern for the safety of dimethicone, the levels used in skincare are safe for use.

Emollient, Skin Conditioning
Liked

Hydrogenated Polyisobutene is a synthetic polymer. Polymers are compounds with high molecular weight. Hydrogenated Polyisobutene is an emollient and texture enhancer.

In one study, Hydrogenated Polyisobutene showed better skin hydration levels than Caprylic/Capric Triglyceride. As an emollient, it helps keep your skin soft and hydrated by trapping moisture in.

Hydrogenated Polyisobutene is often used as a mineral oil replacement.

Learn more about Hydrogenated Polyisobutene
Abrasive, Absorbent
Disliked

Silica is a mineral naturally found in our skin. It helps to thicken and smooth the texture of a product. It also acts as an agent for other ingredients by increasing the absorption of other ingredients into the skin.

Silica is often used for absorption and can help reduce shine when products are applied. Silica occurs in naturally in materials like clay and sandstone, and it can also be produced synthetically.

Silica is present naturally within the skin during collagen production and when reducing inflammation.

Learn more about Silica
Emulsifying
Very Disliked

Sorbitan Sesquioleate is derived from sorbitol and oleic acid. It is an emulsifier and prevents ingredients from separating.

Specifically, this ingredient is a water-in-oil emulsifier, meaning it helps water dissolve into oil.

Some studies suggest this ingredient may cause irritation in some people. If you are unsure, it is best to patch test.

This ingredient may not be Malassezia folliculitis, or fungal-acne safe.

Learn more about Sorbitan Sesquioleate
Cosmetic Colorant
Very Disliked

Mica refers to a group of silicate minerals. Mica crystals are easily split to give products a shimmer. These crystals are able to reflect light to temporarily give your skin a glowy look.

Mica is found to be safe. Trace amounts of heavy metals may be found in mica, but these metals are not harmful in our personal products.

Mica has been used since prehistoric times throughout the world. Ancient Egyptian, Indian, Greek, Roman, Aztec, and Chinese civilizations have used mica.

Mica can be naturally found throughout the world. However, some sources of mica may be controversial. In 2016, mica mined in the Jharkhand state in India was found to be using child labor. However, companies are able to source ethical mica affiliated with international organizations that monitor the mica supply chain.

Learn more about Mica
Cosmetic Colorant
Disliked

Ci 77891 is a white pigment from Titanium dioxide. It is naturally found in minerals such as rutile and ilmenite.

It's main function is to add a white color to cosmetics. It can also be mixed with other colors to create different shades.

Ci 77891 is commonly found in sunscreens due to its ability to block UV rays.

Learn more about CI 77891

Ingredient Ratings

Here's what our community thinks of the ingredients in these two products.

Prep + Prime 24-Hour Extend Eye Base
7
2
14
6
liked
mixed
disliked
not rated
Rehab Line Fix Under Eye Primer
5
4
15
6
liked
mixed
disliked
not rated

When to use

1 Routine
100% use in am
0% use in pm
100% use every day
3 Routines
67% use in am
33% use in pm
67% use every day