Age Intervention Duality
The Jan Marini Age Intervention Duality is a treatment. Our analysis of its 42 ingredients (30 low-risk) rates it Excellent (89/100). Based on its ingredients, it looks well-suited to oily / acne-prone and dry skin.
The Jan Marini Age Intervention Duality is a treatment. Our analysis of its 42 ingredients (30 low-risk) rates it Excellent (89/100). 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
Dry Skin
13/10
Oily/Acne-Prone Skin
3/0
Sensitive Skin
3/13
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
3
|
|
Benzoyl Peroxide
(Antiacne Agent, Oxidising Agent) |
|
|
1
|
|
Water
(Solvent) |
|
|
3
|
B
|
Propylene Glycol
(Fragrance, Humectant, Skin Conditioningagent Miscellaneous, Solvent, Viscosity Decreasing Agent, Skin Conditioning, Viscosity Controlling) |
Good for Dry Skin
|
|
2
|
A
|
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
|
|
1
|
|
Sorbitol
(Flavoring Agent, Fragrance, Humectant, Plasticizer, Skin Conditioning) |
|
4
|
B
|
Polyacrylamide
(Binding Agent, Film Forming, Hair Fixing, Antistatic Agent, Binding) |
|
|
1
|
B
|
C13-14 Isoparaffin
(Emollient, Solvent) |
|
|
3
|
A
|
Cyclopentasiloxane
(Hair Conditioning, Skin Conditioning, Emollient, Solvent) |
Silicone
|
|
2
|
A
|
Cyclohexasiloxane
(Hair Conditioning, Skin Conditioning, Emollient, Solvent) |
|
|
1
|
A
|
Carbomer
(Emulsion Stabilising, Viscosity Increasing Agent, Gel Forming, Viscosity Controlling) |
|
|
3
|
B
|
Laureth-7
(Emulsifying, Surfactant) |
|
|
5
|
B
|
Triethanolamine
(Fragrance, Ph Adjuster, Emulsifying, Surfactant, Buffering Agent, Masking) |
|
|
1
|
A
|
Disodium EDTA
(Chelating Agent, Viscosity Controlling) |
|
|
6
|
B
|
Diazolidinyl Urea
(Preservative) |
|
|
4
|
A
|
Methylparaben
(Fragrance, Preservative) |
Paraben
|
7
|
A
|
Propylparaben
(Fragrance, Preservative, Perfuming) |
Paraben
|
|
1
|
A
|
Caprylic/Capric Triglyceride
(Emollient, Masking, Perfuming, Skin Conditioning, Solvent) |
|
|
1
|
A
|
Glyceryl Stearate
(Emollient, Emulsifying) |
Fungal Acne Trigger
|
|
3
|
B
|
Polysorbate 20
(Emulsifying, Surfactant) |
Fungal Acne Trigger
|
|
|
Carthamus Tinctorius Seed Oil
(Fragrance, Skin Conditioning) |
|
|
3
|
B
|
Polysorbate 60
(Emulsifying, Surfactant) |
Fungal Acne Trigger
|
|
1
|
A
|
Stearic Acid
(Fragrance, Sufactant, Emulsifying, Surfactantsurfactant Cleansing Agent Is Included As A Function For The Soap Form Of Stearic Acid., Emulsion Stabilising, Masking, Refatting) |
Bad for Oily Skin
Fungal Acne Trigger
|
|
|
|
Butyrospermum Parkii Butter
(Skin Conditioning, Viscosity Controlling) |
|
|
1
|
A
|
Stearyl Alcohol
(Emulsion Stabilising, Fragrance, Emulsifying, Surfactant, Foambooster, Viscosity Increasing Agent, Emollient, Foam Boosting, Masking, Opacifying, Refatting, Viscosity Controlling) |
|
|
9
|
A
|
Retinol
(Skin Conditioning) |
Bad for Sensitive Skin
|
|
|
|
Myristoyl Tripeptide-4
(Skin Conditioning) |
|
|
|
|
Bisabolol
(Fragrance, Skin Conditioning, Soothing) |
|
|
1
|
A
|
Sodium Hyaluronate
(Skin Conditioning, Humectant) |
Good for Dry Skin
|
|
1
|
|
Camellia Oleifera Leaf Extract
(Astringent, Skin Conditioning) |
|
|
1
|
A
|
Palmitoyl Tetrapeptide-7
(Skin Conditioning) |
|
|
1
|
|
Palmitoyl Oligopeptide
(Skin Conditioning, Sufactant) |
|
|
1
|
|
Chrysin
(Skin Conditioning) |
|
|
3
|
A
|
Dimethicone
(Antifoaming Agent, Skin Protecting, Emollient, Skin Conditioning) |
Silicone
|
|
1
|
A
|
Dimethicone/Vinyl Dimethicone Crosspolymer
(Viscosity Controlling) |
|
|
1
|
|
Glyceryl Acrylate/Acrylic Acid Copolymer
(Humectant, Viscosity Controlling) |
|
|
3
|
B
|
Steareth-20
(Sufactant, Emulsifying, Surfactant) |
|
|
1
|
|
N-Hydroxysuccinimide
(Skin Conditioning) |
|
|
1
|
A
|
Hexylene Glycol
(Fragrance, Solvent, Viscosity Decreasing Agent, Emulsifying, Perfuming, Skin Conditioning, Surfactant) |
|
|
1
|
A
|
Ethylhexylglycerin
(Deodorant, Skin Conditioning) |
|
|
1
|
A
|
Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant) |
|
|
6
|
A
|
BHT
(Antioxidant, Fragrance, Masking) |
|
|
4
|
A
|
Phenoxyethanol
(Fragrance, Preservative) |
Paraben
|
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.
Often considered acceptable for limited spot use, but many clinicians prefer you check first.
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.
Retinol
Lower strengths (2.5–5%) work about as well as 10% for many people, with less dryness and irritation.
Benzoyl Peroxide
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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