NYX Cosmetics Shine Killer Mattifying Primer | Unbiased Skincare Efficacy Review by AI

Review

Does NYX Cosmetics Shine Killer Mattifying Primer work?

Based on the ingredient list analysis by CreamScan AI, these are the key benefits you can expect from using NYX Cosmetics Shine Killer Mattifying Primer:

Significant moisturizing. It has a moisturizing rating of 7.3 out of 10.

Moisturizer with the right occlusivity for dry to very dry skin, ideally to be used with extra humectants

According to CreamScan analysis, NYX Cosmetics Shine Killer Mattifying Primer is highly moisturizing, with a moisturizing rating of 7.3 out of 10.

Is it more humectant or occlusive? Significantly more occlusive. It has a moderate humectancy of 4.6 out of 10, entirely due to the substantial concentration of Caprylyl Glycol (est. ≈4.6%), and a maximum occlusivity of 10 out of 10, solely because of the high content of Dimethicone (est. ≈49.9%).

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 dry skin. The occlusive profile of NYX Cosmetics Shine Killer Mattifying Primer suggests a rich, thick texture, making it perfectly suited for dry skin.

However, it contains a moderate level of humectants, and 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.

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

Preservative
Colorant
Formula helpers

Other

Est. % The Estimated % is our algorithm-based assumption about an ingredient's concentration in a formula. Learn more The Estimated % is our algorithm-based assumption about an ingredient's concentration in a formula. Learn more	Ingredient	Origin	Functions
49.9	Dimethicone The 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. Dimethicone The 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.	Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure.	Moisturizing (Occlusive), Occlusives are moisturizing ingredients that seal moisture into the skin, forming a water-resistant barrier. Moisturizing (Occlusive), Occlusives are moisturizing ingredients that seal moisture into the skin, forming a water-resistant barrier. Emollient, Emollients fill the micro-cracks in the skin and leave it feeling soft and pleasant to the touch. Emollients are often mistakenly perceived as moisturizing ingredients. Emollient, Emollients fill the micro-cracks in the skin and leave it feeling soft and pleasant to the touch. Emollients are often mistakenly perceived as moisturizing ingredients. Formula helper Antifoaming – reduces or prevents the formation of foam. Solvent – a liquid that dissolves other ingredients. Formula helper Antifoaming – reduces or prevents the formation of foam. Solvent – a liquid that dissolves other ingredients.
25.1	Silica A 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. Silica A 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.	Naturally occurring These are ingredients initially present in nature, such as elements (Zinc, Gold, or Silver), minerals, or water. Naturally occurring These are ingredients initially present in nature, such as elements (Zinc, Gold, or Silver), minerals, or water.	Abrasive, Abrasives 'physically' exfoliate the skin (i.e., manually remove dead skin cells) by rubbing against its surface. Abrasive, Abrasives 'physically' exfoliate the skin (i.e., manually remove dead skin cells) by rubbing against its surface. Formula helper Absorbent – soaks up excess oil from the skin. Anticaking – prevents the formation of clumps. Bulking – increases the volume of a product. Dispersing – ensures the even distribution of particles. Opacifying – reflects light and creates opaque products. Viscosity controlling – changes the thickness of a product. Formula helper Absorbent – soaks up excess oil from the skin. Anticaking – prevents the formation of clumps. Bulking – increases the volume of a product. Dispersing – ensures the even distribution of particles. Opacifying – reflects light and creates opaque products. Viscosity controlling – changes the thickness of a product.
12.6	Dimethicone Crosspolymer A group of ingredients that are typically added to skincare products to adjust the formula. Dimethicone Crosspolymers stabilize a formula, regulate its thickness and consistency and give the product a velvety feel. Dimethicone Crosspolymer A group of ingredients that are typically added to skincare products to adjust the formula. Dimethicone Crosspolymers stabilize a formula, regulate its thickness and consistency and give the product a velvety feel.	Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure.	Formula helper Dispersing – ensures the even distribution of particles. Emulsion stabilizing – increases the stability of a formula. Viscosity controlling – changes the thickness of a product. Formula helper Dispersing – ensures the even distribution of particles. Emulsion stabilizing – increases the stability of a formula. Viscosity controlling – changes the thickness of a product.
6.8	Charcoal Powder A naturally occurring ingredient that is used as a colorant due to its rich black color. It can also be used as an abrasive to exfoliate the top layer of dead cells off the surface of the skin, as well as as an absorbent. Charcoal Powder A naturally occurring ingredient that is used as a colorant due to its rich black color. It can also be used as an abrasive to exfoliate the top layer of dead cells off the surface of the skin, as well as as an absorbent.	Naturally occurring These are ingredients initially present in nature, such as elements (Zinc, Gold, or Silver), minerals, or water. Naturally occurring These are ingredients initially present in nature, such as elements (Zinc, Gold, or Silver), minerals, or water.	Abrasive, Abrasives 'physically' exfoliate the skin (i.e., manually remove dead skin cells) by rubbing against its surface. Abrasive, Abrasives 'physically' exfoliate the skin (i.e., manually remove dead skin cells) by rubbing against its surface. Colorant, Colorants give color to skincare products. Colorant, Colorants give color to skincare products. Formula helper Absorbent – soaks up excess oil from the skin. Opacifying – reflects light and creates opaque products. Formula helper Absorbent – soaks up excess oil from the skin. Opacifying – reflects light and creates opaque products.
4.6	Caprylyl Glycol An 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. Caprylyl Glycol An 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.	Botanical, Ingredients derived from plants, mosses, and lichens: extracts, oils, powders, juices and other types of processed plant materials. Botanical, Ingredients derived from plants, mosses, and lichens: extracts, oils, powders, juices and other types of processed plant materials. Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure.	Moisturizing (Humectant), Humectants are moisturizing ingredients that draw moisture to the skin, either from deeper layers or from the environment (when it's humid). Moisturizing (Humectant), Humectants are moisturizing ingredients that draw moisture to the skin, either from deeper layers or from the environment (when it's humid). Emollient, Emollients fill the micro-cracks in the skin and leave it feeling soft and pleasant to the touch. Emollients are often mistakenly perceived as moisturizing ingredients. Emollient, Emollients fill the micro-cracks in the skin and leave it feeling soft and pleasant to the touch. Emollients are often mistakenly perceived as moisturizing ingredients. Preservative Preservatives prevent the growth of bacteria and fungi in a product. Preservative Preservatives prevent the growth of bacteria and fungi in a product.
1	Phenoxyethanol The most frequently used preservative in skincare. It is a clear, oil-like liquid synthetic substance that protects products from harmful bacteria and yeast, whilst still leaving skin microflora unharmed. It is confirmed by research to be harmless. Phenoxyethanol The most frequently used preservative in skincare. It is a clear, oil-like liquid synthetic substance that protects products from harmful bacteria and yeast, whilst still leaving skin microflora unharmed. It is confirmed by research to be harmless.	Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure.	Antimicrobial, Antimicrobials prevent the growth of harmful microorganisms on the skin. Antimicrobial, Antimicrobials prevent the growth of harmful microorganisms on the skin. Preservative Preservatives prevent the growth of bacteria and fungi in a product. Preservative Preservatives prevent the growth of bacteria and fungi in a product.

49.9

Dimethicone

Function:

Origin:

25.1

Silica

Function:

Origin:

12.6

Dimethicone Crosspolymer

Function:

Origin:

6.8

Charcoal Powder

Function:

Origin:

4.6

Caprylyl Glycol

Function:

Origin:

Phenoxyethanol

Function:

Origin:

Ratings

Caprylyl Glycol

4.6

Benchmark

Dimethicone

49.9

Benchmark

Moisturizing rating

7.3

Ingredient		Est. %	Benchmark Sciense based points to which we compare all humectants and all occlusives in a product to calculate its Humectancy and Occlusivity. Sciense based points to which we compare all humectants and all occlusives in a product to calculate its Humectancy and Occlusivity.	Raiting
Humectancy	All humectants	4.6	10	4.6
	Caprylyl Glycol An 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. Caprylyl Glycol An 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.	4.6
Occlusivity	All occlusives	49.9	20	10.0
	Dimethicone The 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. Dimethicone The 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.	49.9
Moisturizing rating				7.3

Ingredient	Est. %	Benchmark According to various studies, a formula made up of 10% humectants will significantly increase skin hydration. Some studies also suggest that any further icrease in the consentration of humectants does not translate inty any more hydration and may even be dehydrating. To achieve maximum Humectancy, the product should have humectants with a total score of 10 and more. According to various studies, a formula made up of 10% humectants will significantly increase skin hydration. Some studies also suggest that any further icrease in the consentration of humectants does not translate inty any more hydration and may even be dehydrating. To achieve maximum Humectancy, the product should have humectants with a total score of 10 and more.	Humectancy
Caprylyl Glycol An 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. Caprylyl Glycol An 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.	4.6
All humectants	4.6	10	4.6

Caprylyl Glycol

4.6

Benchmark

Ingredient	Est. %	Benchmark The most occlusive product possible is 100% petrolatum (hello Vaseline Jelly). According to studies, hovewer, even 10% petrolatum can achieve almost the same mosturizing effect. The occlusive properties of petrolatum are at least twice as superior as other occlusive ingredients. This is why, in order to match the moisturizing efficacy of 10% petrolatum, a product needs to contain at least 20% of other occlusives. Our benchmark for maximum Occlusivity is 20 (and the petrolatum score is always doubled). The most occlusive product possible is 100% petrolatum (hello Vaseline Jelly). According to studies, hovewer, even 10% petrolatum can achieve almost the same mosturizing effect. The occlusive properties of petrolatum are at least twice as superior as other occlusive ingredients. This is why, in order to match the moisturizing efficacy of 10% petrolatum, a product needs to contain at least 20% of other occlusives. Our benchmark for maximum Occlusivity is 20 (and the petrolatum score is always doubled).	Occlusivity
Dimethicone The 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. Dimethicone The 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.	49.9
All occlusives	49.9	20	10.0

Dimethicone

49.9

Benchmark

Ingredient	Ingredient anti-wrinkle power Shows on a scale of 0-10 how effective an ingredient is at reducing wrinkles. Both the Reported Efficacy of the ingredient and the Strength of Evidence are taken into account. Shows on a scale of 0-10 how effective an ingredient is at reducing wrinkles. Both the Reported Efficacy of the ingredient and the Strength of Evidence are taken into account.	when present at, %	in this formula est. %	Rating
None
Total				0

None

Anti-wrinkle rating

Ingredient	Est. %	Benchmark It differs from one antioxidant ingredient to another, but, on average, the research suggests that topically applied antioxidants are effective in consentrations of 3% or above. Any product with a total antioxidant score of 3 or more is considered to be reach in antioxidants. It differs from one antioxidant ingredient to another, but, on average, the research suggests that topically applied antioxidants are effective in consentrations of 3% or above. Any product with a total antioxidant score of 3 or more is considered to be reach in antioxidants.	Rich in Antioxidants
None
All antioxidants	0	3	No

None

Benchmark

Ingredient	Est. %	Benchmark The effective concentration of soothing ingredients varies, but we consider a product rich in soothing ingredients if their estimated concentration is equal to or higher than 5%. The effective concentration of soothing ingredients varies, but we consider a product rich in soothing ingredients if their estimated concentration is equal to or higher than 5%.	Rich in Soothing
None
All soothing	0	5	No

None

Benchmark

Ingredients explained

Dimethicone
Est. %	49.9
Function	Moisturizing (Occlusive), Occlusives are moisturizing ingredients that seal moisture into the skin, forming a water-resistant barrier. Moisturizing (Occlusive), Occlusives are moisturizing ingredients that seal moisture into the skin, forming a water-resistant barrier. Emollient, Emollients fill the micro-cracks in the skin and leave it feeling soft and pleasant to the touch. Emollients are often mistakenly perceived as moisturizing ingredients. Emollient, Emollients fill the micro-cracks in the skin and leave it feeling soft and pleasant to the touch. Emollients are often mistakenly perceived as moisturizing ingredients. Antifoaming, Antifoaming – reduces or prevents the formation of foam. Antifoaming, Antifoaming – reduces or prevents the formation of foam. Solvent Solvent – a liquid that dissolves other ingredients. Solvent Solvent – a liquid that dissolves other ingredients.
Origin	Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure.

The 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.

Silica
Est. %	25.1
Function	Abrasive, Abrasives 'physically' exfoliate the skin (i.e., manually remove dead skin cells) by rubbing against its surface. Abrasive, Abrasives 'physically' exfoliate the skin (i.e., manually remove dead skin cells) by rubbing against its surface. Absorbent, Absorbent – soaks up excess oil from the skin. Absorbent, Absorbent – soaks up excess oil from the skin. Anticaking, Anticaking – prevents the formation of clumps. Anticaking, Anticaking – prevents the formation of clumps. Bulking, Bulking – increases the volume of a product. Bulking, Bulking – increases the volume of a product. Dispersing, Dispersing – ensures the even distribution of particles. Dispersing, Dispersing – ensures the even distribution of particles. Opacifying, Opacifying – reflects light and creates opaque products. Opacifying, Opacifying – reflects light and creates opaque products. Viscosity Controlling Viscosity controlling – changes the thickness of a product. Viscosity Controlling Viscosity controlling – changes the thickness of a product.
Origin	Naturally occurring These are ingredients initially present in nature, such as elements (Zinc, Gold, or Silver), minerals, or water. Naturally occurring These are ingredients initially present in nature, such as elements (Zinc, Gold, or Silver), minerals, or water.

A 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.

Dimethicone Crosspolymer
Est. %	12.6
Function	Dispersing, Dispersing – ensures the even distribution of particles. Dispersing, Dispersing – ensures the even distribution of particles. Emulsion Stabilizing, Emulsion stabilizing – increases the stability of a formula. Emulsion Stabilizing, Emulsion stabilizing – increases the stability of a formula. Viscosity Controlling Viscosity controlling – changes the thickness of a product. Viscosity Controlling Viscosity controlling – changes the thickness of a product.
Origin	Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure.

A group of ingredients that are typically added to skincare products to adjust the formula. Dimethicone Crosspolymers stabilize a formula, regulate its thickness and consistency and give the product a velvety feel.

Charcoal Powder
Est. %	6.8
Function	Abrasive, Abrasives 'physically' exfoliate the skin (i.e., manually remove dead skin cells) by rubbing against its surface. Abrasive, Abrasives 'physically' exfoliate the skin (i.e., manually remove dead skin cells) by rubbing against its surface. Colorant, Colorants give color to skincare products. Colorant, Colorants give color to skincare products. Absorbent, Absorbent – soaks up excess oil from the skin. Absorbent, Absorbent – soaks up excess oil from the skin. Opacifying Opacifying – reflects light and creates opaque products. Opacifying Opacifying – reflects light and creates opaque products.
Origin	Naturally occurring These are ingredients initially present in nature, such as elements (Zinc, Gold, or Silver), minerals, or water. Naturally occurring These are ingredients initially present in nature, such as elements (Zinc, Gold, or Silver), minerals, or water.

A naturally occurring ingredient that is used as a colorant due to its rich black color. It can also be used as an abrasive to exfoliate the top layer of dead cells off the surface of the skin, as well as as an absorbent.

Caprylyl Glycol
Est. %	4.6
Function	Moisturizing (Humectant), Humectants are moisturizing ingredients that draw moisture to the skin, either from deeper layers or from the environment (when it's humid). Moisturizing (Humectant), Humectants are moisturizing ingredients that draw moisture to the skin, either from deeper layers or from the environment (when it's humid). Emollient, Emollients fill the micro-cracks in the skin and leave it feeling soft and pleasant to the touch. Emollients are often mistakenly perceived as moisturizing ingredients. Emollient, Emollients fill the micro-cracks in the skin and leave it feeling soft and pleasant to the touch. Emollients are often mistakenly perceived as moisturizing ingredients. Preservative Preservatives prevent the growth of bacteria and fungi in a product. Preservative Preservatives prevent the growth of bacteria and fungi in a product.
Origin	Botanical, Ingredients derived from plants, mosses, and lichens: extracts, oils, powders, juices and other types of processed plant materials. Botanical, Ingredients derived from plants, mosses, and lichens: extracts, oils, powders, juices and other types of processed plant materials. Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure.

An 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.

Phenoxyethanol
Est. %	1
Function	Antimicrobial, Antimicrobials prevent the growth of harmful microorganisms on the skin. Antimicrobial, Antimicrobials prevent the growth of harmful microorganisms on the skin. Preservative Preservatives prevent the growth of bacteria and fungi in a product. Preservative Preservatives prevent the growth of bacteria and fungi in a product.
Origin	Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure. Synthetic All kinds of ingredients formulated or produced by a chemical process, or those that have a chemical modification in their structure.

The most frequently used preservative in skincare. It is a clear, oil-like liquid synthetic substance that protects products from harmful bacteria and yeast, whilst still leaving skin microflora unharmed. It is confirmed by research to be harmless.