Peter Thomas Roth Instant FIRMx Glow-Filter Priming Serum

Peter Thomas Roth Instant FIRMx Glow-Filter Priming Serum

Efficacy75/100IrritancyMedium

Works for

Anti-aging
Threonine, Aspartic acid + 4 more
May help
What the product description says
“Instantly illuminates skin for a more lifted and defined look with Illuminating Minerals and Diamond Powder, while 5% Actigym™ Clinical Contouring Technology helps sculpt the look of skin over time to define the appearance of cheeks, chin and jawline with continued daily use.”
Source: Peter Thomas Roth

This product contains aspartic acid, lysine, serine, threonine. These ingredients might be able to help reduce and prevent fine lines and wrinkles, improve skin elasticity and firmness, but there is not enough evidence that it actually works.

ThreonineKey activeEffect: MediumAn amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles~0.25–0.45%
Aspartic acidKey activeEffect: MediumAn amino-acid that helps increase skin hydration and might help to slightly improve skin firmness, potentially reducing lines and wrinkles~0.2–0.4%
LysineKey activeEffect: MediumAn amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles~0.2–0.4%
SerineKey activeEffect: MediumAn amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles~0.2–0.4%
Butyrospermum parkii butterEffect: LowA great moisturising ingredient that softens the skin and reduces water loss from its upper layer. It also can be helpful in protecting skin from free radicals~1.7–2%
NiacinamideUnder-dosedIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~0.35–0.6%
Moisturizing
Glycerin, Dimethicone + 26 more
Works
What the product description says
“94% agreed skin felt hydrated and soft†”
Source: Peter Thomas Roth

This product can help improve hydration of the skin with the two types of ingredients.

The first type is called “humectants”:
these ingredients help attract water. When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from within deeper layers of the skin. The following ingredients in this product do the job: alanine, arginine.

This product also contains ingredients called “occlusives”. They help reduce the speed with which our skin loses moisture to the outside environment. These ingredients also help soften the upper layer of the skin, so it feels less tight and nicer to the touch. The following ingredients in this product do the job: arginine, butyrospermum parkii butter.

GlycerinKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant~4.5–5.5%
DimethiconeKey active· Emollient, OcclusiveEffect: HighA silicone that helps to reduce water loss from the surface of the skin. Can temporarily "fill in" lines and wrinkles, absorb oil, and create a nice product finish~2–2.4%
Butyrospermum parkii butterKey active· Emollient, OcclusiveEffect: HighA great moisturising ingredient that softens the skin and reduces water loss from its upper layer. It also can be helpful in protecting skin from free radicals~1.7–2%
Caprylic/capric triglycerideKey active· Emollient, OcclusiveEffect: HighA good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin~1.5–1.8%
Cetearyl alcoholKey active· EmollientEffect: MediumA non-drying alcohol. Works as an emollient. Helps water and oil mix together and creates a nice product texture~0.75–1.15%
Isostearyl alcoholKey active· EmollientEffect: MediumHelps soften the upper layer of the skin~0.5–0.8%
Sodium hyaluronateKey active· HumectantEffect: HighOne of the best moisturizing ingredients. Attracts water into the upper layer of the skin~0.3–0.55%
Sodium lactateKey active· HumectantEffect: HighHelps attract water to the upper layer of the skin. Is often used to adjust the pH level of the product~0.25–0.4%
ThreonineKey activeEffect: HighAn amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles~0.25–0.45%
Glutamic acidKey active· HumectantEffect: HighAn amino-acid that helps attract water to the upper layer of the skin~0.25–0.5%
ProlineKey activeEffect: Medium~0.25–0.45%
TyrosineKey activeEffect: High~0.2–0.4%
ArginineKey active· Humectant, OcclusiveEffect: HighAn amino acid that is naturally present in skin and helps keep it hydrated. When used together with AHAs, it can reduce their irritating effect on the skin~0.2–0.4%
Aspartic acidKey active· HumectantEffect: HighAn amino-acid that helps increase skin hydration and might help to slightly improve skin firmness, potentially reducing lines and wrinkles~0.2–0.4%
GlycineKey active· HumectantEffect: HighHelps to attract water to the upper layer of the skin and can help restore the skin barrier function~0.2–0.4%
HistidineKey active· HumectantEffect: High~0.2–0.4%
IsoleucineKey activeEffect: HighAn amino acid that can help attract water to the upper layer of the skin and support skin's barrier function~0.2–0.4%
LysineKey activeEffect: HighAn amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles~0.2–0.4%
SerineKey activeEffect: HighAn amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles~0.2–0.4%
AlanineKey active· HumectantEffect: HighAn amino-acid that helps to attract water to the upper layer of the skin and might help to lighten the skin, but solid evidence is lacking~0.2–0.4%
PolymethylsilsesquioxaneKey activeEffect: HighA silicone that improves product texture and helps dissolve other ingredients. Can form a non-greasy film on the skin to prevent moisture loss~0.15–0.3%
Dimethicone crosspolymerKey activeEffect: MediumUsed to create a thicker product texture. Helps soften the upper layer of the skin and might be able to prevent moisture loss from its surface~0.15–0.25%
Butylene glycol· HumectantEffect: LowUsed to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin~4–4.8%
Isononyl isononanoate· Emollient, OcclusiveEffect: LowForms a protective film on the surface of the skin to prevent moisture loss. Gives a velvety feel to products while reducing tackiness~3.1–3.8%
Glyceryl stearate· EmollientEffect: LowAn emollient that softens the skin and forms a protective layer on its surface. Helps water and oil mix together~1.2–1.5%
Polyglyceryl-6 distearateEffect: LowHelps oil and water mix together while softening the upper layer of the skin~0.95–1.15%
Polysilicone-11Effect: LowA silicone that forms a light film on the skin surface helping to bind water and temporarily absorb oils creating a matt and powdery feel~0.2–0.4%
NiacinamideUnder-dosedIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~0.35–0.6%

Can it cause trouble?

Irritancy
1 strong irritant: Citrus aurantium bergamia fruit water
Medium risk
We flagged 9 ingredients with irritancy potential. Severity depends on your sensitivity threshold; the table lists the worst offenders first.
IngredientFunctionIrritationEst. amount
Caprylic/capric triglycerideA good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerinMedium~1.5–1.8%est.
Polyglyceryl-6 distearateHelps oil and water mix together while softening the upper layer of the skinMedium~0.95–1.15%est.
Butylene glycol cocoateHelps oil and water mix togetherMedium~0.45–0.65%est.
Citric acidCan work as an exfoliant but is typically used to adjust the product pHMedium~0.25–0.5%est.
Sodium lactateHelps attract water to the upper layer of the skin. Is often used to adjust the pH level of the productMedium~0.25–0.4%est.
Potassium sorbateA preservativeMedium~0.25–0.45%est.
Polysorbate 60Helps oil and water mix togetherMedium~0.25–0.4%est.
EthylhexylglycerinA preservativeMedium~0.15–0.3%est.
Comedogenic
2 ingredients rated 2 or more on the 0–5 pore-clogging scale
2 flagged
These ingredients have a comedogenic rating of 2 or more on a 0–5 scale; the table shows each one's rating. In leave-on products they can clog pores in acne-prone skin.
IngredientFunctionRatingEst. amount
Butyrospermum parkii butterA great moisturising ingredient that softens the skin and reduces water loss from its upper layer. It also can be helpful in protecting skin from free radicals3/5~1.7–2%est.
Cetearyl alcoholA non-drying alcohol. Works as an emollient. Helps water and oil mix together and creates a nice product texture2/5~0.75–1.15%est.

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Ingredients

Filter by role to see what each ingredient is doing.

Water~45–55%
Formula
Irritation risk
Low

Plain old water

More about Water
Glycerin~4.5–5.5%
Key active
Irritation risk
Low
Works for
Moisturizing

One of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant

More about Glycerin
Butylene glycol~4–4.8%
Formula
Irritation risk
Low
Works for
Moisturizing

Used to create a nice product texture and help delivery of other ingredients. Might be somewhat helpful in attracting water to the upper layer of the skin

More about Butylene glycol
Isononyl isononanoate~3.1–3.8%
Formula
Irritation risk
Low
Works for
Moisturizing

Forms a protective film on the surface of the skin to prevent moisture loss. Gives a velvety feel to products while reducing tackiness

More about Isononyl isononanoate
Citrus aurantium bergamia fruit water~2.3–2.8%
Irritant · high
Dimethicone~2–2.4%
Key active
Irritation risk
Low
Works for
MoisturizingMattifying

A silicone that helps to reduce water loss from the surface of the skin. Can temporarily "fill in" lines and wrinkles, absorb oil, and create a nice product finish

More about Dimethicone
Butyrospermum parkii butter~1.7–2%
Key activeComedogenic 3/5
Irritation risk
Low
Comedogenicity
3/5
Works for
MoisturizingAnti-agingAnti-oxidation

A great moisturising ingredient that softens the skin and reduces water loss from its upper layer. It also can be helpful in protecting skin from free radicals

More about Butyrospermum parkii butter
Caprylic/capric triglyceride~1.5–1.8%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Moisturizing

A good mix of fatty acids that forms a protective layer on the skin. Improves the shelf life of products. Derived from coconut and glycerin

More about Caprylic/capric triglyceride
Glyceryl stearate~1.2–1.5%
Formula
Irritation risk
Low
Works for
CleansingMoisturizing

An emollient that softens the skin and forms a protective layer on its surface. Helps water and oil mix together

More about Glyceryl stearate
Polyglyceryl-6 distearate~0.95–1.15%
Irritant · medium
Irritation risk
Medium
Works for
CleansingMoisturizing

Helps oil and water mix together while softening the upper layer of the skin

More about Polyglyceryl-6 distearate
Cetearyl alcohol~0.75–1.15%
Key activeComedogenic 2/5
Irritation risk
Low
Comedogenicity
2/5
Works for
CleansingMoisturizing

A non-drying alcohol. Works as an emollient. Helps water and oil mix together and creates a nice product texture

More about Cetearyl alcohol
Sorbitan stearate~0.55–0.85%
Formula
Irritation risk
Low
Works for
Cleansing

Helps water and oil mix together

More about Sorbitan stearate
Isostearyl alcohol~0.5–0.8%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps soften the upper layer of the skin

More about Isostearyl alcohol
Mica~0.6–0.85%
Formula
Irritation risk
Low

Creates an illusion of smoother and more radiant skin tone. Adds shimmer to the skin by reflecting light

More about Mica
Butylene glycol cocoate~0.45–0.65%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps oil and water mix together

More about Butylene glycol cocoate
Bacillus/soybean ferment extract~0.4–0.6%
Formula
Diamond powder~0.55–0.8%
Formula
Irritation risk
Low

Does not have known skin benefits. Might help create an optical illusion of smoother skin

More about Diamond powder
Niacinamide~0.35–0.6%
Under-dosed
Irritation risk
Low
Works for
Anti-agingEvens skin toneMoisturizingAnti-blemishReduces irritationAntibacterialReduces rednessAnti-inflammatory

Is proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production

More about Niacinamide
Sodium hyaluronate~0.3–0.55%
Key active
Irritation risk
Low
Works for
Moisturizing

One of the best moisturizing ingredients. Attracts water into the upper layer of the skin

More about Sodium hyaluronate
Sodium hydroxide~0.3–0.55%
Formula
Irritation risk
Low

Used to adjust the product's pH

More about Sodium hydroxide
Citric acid~0.25–0.5%
Irritant · medium
Irritation risk
Medium

Can work as an exfoliant but is typically used to adjust the product pH

More about Citric acid
Glutamic acid~0.25–0.5%
Key active
Irritation risk
Low
Works for
Moisturizing

An amino-acid that helps attract water to the upper layer of the skin

More about Glutamic acid
Glycine~0.2–0.4%
Key active
Irritation risk
Low
Works for
Moisturizing

Helps to attract water to the upper layer of the skin and can help restore the skin barrier function

More about Glycine
Histidine~0.2–0.4%
Key active
Irritation risk
Low
Works for
Moisturizing
More about Histidine
Isoleucine~0.2–0.4%
Key active
Irritation risk
Low
Works for
Moisturizing

An amino acid that can help attract water to the upper layer of the skin and support skin's barrier function

More about Isoleucine
Leucine~0.2–0.4%
Formula
Irritation risk
Low
More about Leucine
Lysine~0.2–0.4%
Key active
Irritation risk
Low
Works for
MoisturizingAnti-aging

An amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles

More about Lysine
Phenylalanine~0.25–0.45%
Formula
Irritation risk
Low
More about Phenylalanine
Alanine~0.2–0.4%
Key active
Irritation risk
Low
Works for
MoisturizingEvens skin tone

An amino-acid that helps to attract water to the upper layer of the skin and might help to lighten the skin, but solid evidence is lacking

More about Alanine
Arginine~0.2–0.4%
Key active
Irritation risk
Low
Works for
Moisturizing

An amino acid that is naturally present in skin and helps keep it hydrated. When used together with AHAs, it can reduce their irritating effect on the skin

More about Arginine
Proline~0.25–0.45%
Key active
Irritation risk
Low
Works for
Moisturizing
More about Proline
Serine~0.2–0.4%
Key active
Irritation risk
Low
Works for
MoisturizingAnti-aging

An amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles

More about Serine
Threonine~0.25–0.45%
Key active
Irritation risk
Low
Works for
MoisturizingAnti-aging

An amino-acid that helps to attract water to the upper layer of the skin. In combination with other amino-acids, might help to reduce fine lines and wrinkles

More about Threonine
Tyrosine~0.2–0.4%
Key active
Irritation risk
Low
Works for
Moisturizing
More about Tyrosine
Valine~0.2–0.4%
Formula
Irritation risk
Low
More about Valine
Sodium phytate~0.25–0.45%
Formula
Irritation risk
Low

Used to stabilize product formulations

More about Sodium phytate
Sodium lactate~0.25–0.4%
Key activeIrritant · medium
Irritation risk
Medium
Works for
Moisturizing

Helps attract water to the upper layer of the skin. Is often used to adjust the pH level of the product

More about Sodium lactate
Silica~0.3–0.6%
Formula
Irritation risk
Low

Used to absorb oil and can temporarily mattify skin

More about Silica
Ethylcellulose~0.25–0.45%
Formula
Irritation risk
Low
More about Ethylcellulose
Potassium sorbate~0.25–0.45%
Irritant · medium
Irritation risk
Medium

A preservative

More about Potassium sorbate
Sodium benzoate~0.25–0.45%
Formula
Irritation risk
Low

A preservative

More about Sodium benzoate
Hydroxyethylcellulose~0.25–0.45%
Formula
Irritation risk
Low

Used to thicken product formulations and create gel-like textures

More about Hydroxyethylcellulose
Aspartic acid~0.2–0.4%
Key active
Irritation risk
Low
Works for
MoisturizingAnti-aging

An amino-acid that helps increase skin hydration and might help to slightly improve skin firmness, potentially reducing lines and wrinkles

More about Aspartic acid
Disodium phosphate~0.2–0.4%
Formula
Irritation risk
Low

Helps adjust the product pH and stabilize the formulation

More about Disodium phosphate
Polysorbate 60~0.25–0.4%
Irritant · medium
Irritation risk
Medium
Works for
Cleansing

Helps oil and water mix together

More about Polysorbate 60
Sodium phosphate~0.2–0.35%
Formula
Irritation risk
Low

Helps stabilize the product formulation

More about Sodium phosphate
Polysilicone-11~0.2–0.4%
Formula
Irritation risk
Low
Works for
MattifyingMoisturizing

A silicone that forms a light film on the skin surface helping to bind water and temporarily absorb oils creating a matt and powdery feel

More about Polysilicone-11
Titanium dioxide~0.3–0.5%
Formula
Irritation risk
Low
Works for
Sun protection

Works as a UV filter when used in high concentrations. It is photostable and is effective mostly against the UVB light, with some protection in the UVA range. In small concentrations, used for its ability to improve the color of cosmetic products. Is usually well tolerated by the skin

More about Titanium dioxide
Ethylhexylglycerin~0.15–0.3%
Irritant · medium
Irritation risk
Medium

A preservative

More about Ethylhexylglycerin
Dimethicone crosspolymer~0.15–0.25%
Key active
Irritation risk
Low
Works for
Moisturizing

Used to create a thicker product texture. Helps soften the upper layer of the skin and might be able to prevent moisture loss from its surface

More about Dimethicone crosspolymer
Carbomer~0.15–0.3%
Formula
Irritation risk
Low
Works for
Cleansing

Helps create a thicker or gel-like product texture. It is not a surfactant but can be used in gentle cleansing formulations

More about Carbomer
Polymethylsilsesquioxane~0.15–0.3%
Key active
Irritation risk
Low
Works for
Moisturizing

A silicone that improves product texture and helps dissolve other ingredients. Can form a non-greasy film on the skin to prevent moisture loss

More about Polymethylsilsesquioxane
Iron oxides~0.1–0.15%
Formula
Irritation risk
Low
Works for
Sun protection

An umbrella term for the following three colorants: CI 77491, CI 77492, CI 77499. They might be able to offer some protection against visible light, but the degree of the protection is not clear

More about Iron oxides
Phenoxyethanol~0.15–0.25%
Formula
Irritation risk
Low

A preservative. It helps prevent bacterial growth in cosmetic products

More about Phenoxyethanol
Ingredient list view

Water, Glycerin, Butylene glycol, Isononyl isononanoate, Citrus aurantium bergamia fruit water, Dimethicone, Butyrospermum parkii butter, Caprylic/capric triglyceride, Glyceryl stearate, Polyglyceryl-6 distearate, Cetearyl alcohol, Sorbitan stearate, Isostearyl alcohol, Mica, Butylene glycol cocoate, Bacillus/soybean ferment extract, Diamond powder, Niacinamide, Sodium hyaluronate, Sodium hydroxide, Citric acid, Glutamic acid, Glycine, Histidine, Isoleucine, Leucine, Lysine, Phenylalanine, Alanine, Arginine, Proline, Serine, Threonine, Tyrosine, Valine, Sodium phytate, Sodium lactate, Silica, Ethylcellulose, Potassium sorbate, Sodium benzoate, Hydroxyethylcellulose, Aspartic acid, Disodium phosphate, Polysorbate 60, Sodium phosphate, Polysilicone-11, Titanium dioxide, Ethylhexylglycerin, Dimethicone crosspolymer, Carbomer, Polymethylsilsesquioxane, Iron oxides, Phenoxyethanol

Compare prices

Retailers ranked by price — lowest first.

Amazon USPrice as of 11/13 15:00 GMT
$43.00
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Peter Thomas Roth30 ml
$43.00
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Sephora
$43.00
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Worth comparing, line by line.

Match % combines shared ingredients, the first five ingredients, shared actives and hero ingredients, irritancy (lower counts in the alternative's favour), texture and body area. Only products in the same routine step are compared.

Side-by-side comparison of this product against its closest alternatives
Peter Thomas RothInstant FIRMx Glow-Filter Priming SerumYOUR PRODUCTAHCHydrating Korean Skincare Aqualuronic Face SerumSupereggTonal Scenery Reparative SerumVT CosmeticsVT Reedle Shot 100
Match—87%86%86%
Price$43.00$25.61−$17.39$72.00+$29.00$20.43−$22.57
Shared key ingredients—17 of 2115 of 2114 of 21
Key difference—Copper Tripeptide-1MadecassosideMadecassoside
Irritancy Medium Medium Medium Medium
Drying alcohol————
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Sources cited in this review

Every concentration estimate and effectiveness label is anchored to one of these 16 studies and safety reviews.

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  4. 4
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Peter Thomas Roth Instant FIRMx Glow-Filter Priming Serum
Peter Thomas RothInstant FIRMx Glow-Filter Priming Serum

Affiliate links · As an Amazon Associate, WIMJ earns from qualifying purchases.

As an Amazon Associate, WIMJ earns from qualifying purchases.