A&C Synergy Serum
The PCA Skin A&C Synergy Serum is a serums, essence, ampoule. Our analysis of its 24 ingredients (14 low-risk) rates it Excellent (86/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin.
The PCA Skin A&C Synergy Serum is a serums, essence, ampoule. Our analysis of its 24 ingredients (14 low-risk) rates it Excellent (86/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin.
Summarised from our ingredient analysis — not brand marketing copy.
The evidence
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
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Hamamelis Virginiana Water
(Astringent, Hair Conditioning, Skin Conditioning, Soothing) |
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SD Alcohol 40-B
(Astringent, Solvent, Viscosity Controlling) |
Bad for Dry Skin
Bad for Sensitive Skin
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Glycerin
(Denaturant, Fragrance, Hair Conditioning, Humectant, Oral Care Agent, Oral Health Care Drug, Skin Protecting, Viscosity Decreasing Agent, Perfuming, Solvent) |
Good for Dry Skin
Fungal Acne Trigger
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Polyacrylate Crosspolymer-6
(Emulsion Stabilising, Viscosity Controlling) |
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Alpha-Arbutin
(Antioxidant, Skin Conditioning) |
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Kojic Acid
(Antioxidant) |
Good for Dry Skin
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ASCORBIC ACID
(Antioxidant, Buffering, Fragrance, Skin Conditioning) |
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glycyrrhiza glabra root extract
(Bleaching, Perfuming, Skin Conditioning, Skin Conditioning Emollient, Smoothing, Soothing) |
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Lactic Acid
(Exfoliant, Fragrance, Humectant, Ph Adjuster, Skin Conditioning Agent Humectant, Skin Conditioning, Buffering Agent) |
Bad for Sensitive Skin
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Arginine
(Fragrance, Hair Conditioning, Skin Conditioning, Antistatic Agent, Masking) |
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Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling) |
Good for Dry Skin
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Peumus Boldus Leaf Extract
(Masking) |
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Glutamoyl Aminoguanidine
(Skin Conditioning, Skin Conditioning Emollient) |
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Decarboxy Carnosine HCl
(Skin Conditioning, Antistatic Agent, Hair Conditioning) |
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Resveratrol
(Antioxidant, Skin Protecting) |
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Benzyl Alcohol
(External Analgesic, Fragrance, Oral Health Care Drug, Preservative, Solvent, Viscosity Decreasing Agent, Masking) |
Allergens
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Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
(Emulsion Stabilising, Viscosity Controlling) |
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Isohexadecane
(Skin Conditioning, Emollient, Solvent) |
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Polysorbate 60
(Emulsifying, Surfactant) |
Fungal Acne Trigger
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Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, Solvent) |
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Retinyl Palmitate
(Skin Conditioning, Skin Conditioning Miscellaneous) |
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Allyl Methacrylates Crosspolymer
(Emulsion Stabilising, Opacifying, Viscosity Increasing Agent, Viscosity Controlling) |
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Retinol
(Skin Conditioning) |
Bad for Sensitive Skin
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Polysorbate 20
(Emulsifying, Surfactant) |
Fungal Acne Trigger
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No personal ingredient notes yet. Save ingredients to your profile to get good/bad alerts here.
EWG flags hazard, not real-world risk — ratings don't account for how much of an ingredient a product contains. Treat these as things to research, not verdicts. How we score →
How to use
General guidance from this product's category and active ingredients — always follow the directions on the package.
Trust & honesty
Contains ingredients some choose to avoid or double-check while pregnant or nursing.
Topical retinoids (retinol, retinaldehyde, retinyl esters) are widely advised against in pregnancy as a precaution. The strongest evidence is for ORAL retinoids; topical absorption is low, but most clinicians err on the side of caution.
This is general information, not medical advice. Pregnancy guidance varies and depends on concentration and your individual situation — always check with your doctor, midwife or pharmacist. How we flag this.
The concentrations these actives are typically effective at in research — not a measurement of this product.
Most studied between 0.1% and 1%. Higher is not automatically better — irritation climbs with dose, so a well-formulated lower strength is often the sweet spot.
Retinyl Palmitate, Retinol
L-ascorbic acid is usually used at 5–20% (around 10–15% is common). Above ~20% adds little and tends to irritate more; it also needs a low pH to work.
ASCORBIC ACID
OTC leave-on AHAs are usually 5–10%. The effect also depends on pH and free-acid value, not the percentage alone.
Lactic Acid
INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.
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