mac Prep + Prime 24-Hour Extended Eye Base

Ingredients overview

Label order. Colour is our internal rating: green routine, yellow restricted or worth a look, red prohibited or high-risk, grey not yet decoded.

Ingredients are listed in label order; the order reflects the label only, not exact concentrations.

1. Dimethicone
2. Isododecane
3. Talc
4. Dimethicone Silylate
5. Trihydroxystearin
6. Disteardimonium Hectorite
7. Kaolin
8. Hydrogenated Polyisobutene
9. Polyethylene
10. Vp/Eicosene Copolymer
11. Trioctyldodecyl Citrate
12. Tocopheryl Acetate
13. Lecithin
14. Bisabolol
15. Triethylhexanoin
16. Silica
17. Alumina
18. Propylene Carbonate
19. Ethylene/Methacrylate Copolymer
20. Sorbitan Sesquioleate
21. Caprylyl Glycol
22. Stearic Acid
23. Glycyrrhetinic Acid
24. PEG-40 Stearate
25. Isopropyl Titanium Triisostearate
26. Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate
27. Mica
28. Titanium Dioxide
29. Iron Oxides (Ci 77491
30. Ci 77492
31. Ci 77499)
32. Bismuth Oxychloride

Highlights

Free of alcoholFree of parabensFree of sulfatesFree of essential oilsFree of formaldehyde releasersContains siliconesContains mineral oilContains fragranceContains PEG

Key ingredients

ANTIFOAMING

DimethiconeDimethicone Silylate

SKIN CONDITIONING - EMOLLIENT

IsododecaneHydrogenated Polyisobutene

ABRASIVE

TalcKaolin

SKIN CONDITIONING

Trihydroxystearin

LIGHT STABILIZER

Disteardimonium Hectorite

Other ingredients

PolyethyleneVp/Eicosene CopolymerTrioctyldodecyl CitrateTocopheryl AcetateLecithinBisabololTriethylhexanoinSilicaAluminaPropylene CarbonateEthylene/Methacrylate CopolymerSorbitan SesquioleateCaprylyl GlycolStearic AcidGlycyrrhetinic AcidPEG-40 StearateIsopropyl Titanium TriisostearatePentaerythrityl Tetra-Di-T-Butyl HydroxyhydrocinnamateMicaTitanium DioxideIron Oxides (Ci 77491Ci 77492Ci 77499)Bismuth Oxychloride

Skim through

Ingredients explained

Dimethicone

Silicone occlusive at 1–5%; provides smooth feel, non-penetrating, suitable for sensitive skin

Isododecane

Synthetic hydrocarbon solvent providing dry, silky skin feel; high volatility, non-comedogenic, common in sunscreens and foundations, usage 5-30%.

Talc

Inorganic mineral powder for texture and oil absorption; must be asbestos-free; fineness affects skin feel and safety, avoid inhalation.

Dimethicone Silylate

Siloxane; used for defoaming and skin feel; low allergenicity, may clog pores, cautious for oily skin.

Trihydroxystearin

Polyol thickener and humectant; water-soluble, improves viscosity and basic conditioning

Disteardimonium Hectorite

Inorganic ionic clay thickener at 0.25-1%; water/oil/solvent systems, rheology control, avoid strong acids, may affect active release.

Kaolin

Kaolin absorbent and bulk for powders/masks; check for heavy metals and comply with EU colorant limits IV/119

Hydrogenated Polyisobutene

Hydrogenated polyisobutene; petroleum-derived lubricant forming breathable film; high purity, low irritation/comedogenicity.

Polyethylene

Plastic polymer particles for abrasion or film; check EU ban on microplastics in rinse-off products, flush-off only

Vp/Eicosene Copolymer

Water-soluble film former and thickener; no known irritancy or comedogenic issues.

Trioctyldodecyl Citrate

Polyol ester for emollience and texture; low comedogenic, good for light formulas.

Tocopheryl Acetate

Vitamin E derivative antioxidant at 0.1–1%; more stable than tocopherol, store protected from light

Lecithin

Phospholipid emulsifier at 1-5%; biocompatible, moisturizing/antioxidant, prone to oxidation (add TBHQ), mild for sensitive skin.

Bisabolol

Soothing and anti-inflammatory agent, 0.01–0.1%; low irritation, good for sensitive skin.

Triethylhexanoin

Light ester for non-greasy feel and fragrance; low allergenicity, high levels can act as solvent

Silica

Silica powder at 1–10%; absorbs oil, thickens, provides matte finish, for oil-control products

Alumina

Alumina, inorganic abrasive/thickener; nano-grade requires inhalation risk assessment.

Propylene Carbonate

Inert solvent and viscosity modifier; often used as penetration enhancer, mild at low levels

Ethylene/Methacrylate Copolymer

Cationic film former for styling and thickening; absorbs oils, needs solvent co-use; mild eye irritation

Sorbitan Sesquioleate

Non-ionic emulsifier for O/W or W/O systems; moderate emulsification power, often used with co-emulsifiers

Caprylyl Glycol

Polyol conditioner and preservative booster at 0.5–3%; emollient feel, often paired with 1,2-hexanediol

Stearic Acid

Fatty acid emulsifier, white waxy solid; adds slip feel

Glycyrrhetinic Acid

Glycyrrhizic acid; anti-inflammatory; poor water solubility, needs solubilization.

PEG-40 Stearate

Water-soluble emulsifier for O/W; mild cleansing, high levels may be comedogenic, caution for sensitive skin.

Isopropyl Titanium Triisostearate

Titanium isostearate complex for UVB absorption and emulsification aid; photostable, low irritancy, low comedogenicity.

Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate

High-efficiency lipid-soluble antioxidant preventing oil rancidity; very low usage, typically 0.05-0.1%, ensure even distribution, avoid metal-catalyzed oxidation.

Mica

Mineral colorant for pearlescence; heavy metal screening required

Titanium Dioxide

Physical UV filter and colorant up to 25%; nano form requires attention

Iron Oxides (Ci 77491

Not decoded yet

Ci 77492

Iron oxide red; stable inorganic pigment, non-toxic; ensure dispersion to prevent sedimentation.

Ci 77499)

Not decoded yet

Bismuth Oxychloride

White pigment at 5–20%; for makeup coverage, may cause sensitivity in some

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