MAC Cosmetics Pro Longwear Fluidline 16HR Waterproof and Smudge-Resistant Eye Liner and Brow Gel
by MAC Cosmetics · makeup
Editor's Take
A professional-grade waterproof liner built on volatile silicones and film-forming resins, delivering on its 16-hour claim while sitting far outside clean standards territory.
Four-pillar formula scores
- Efficacy: 8.5 / 10
- Modern Tech: 8.2 / 10
- Clean Beauty: 1.0 / 10
- Sustainability: 5.9 / 10
The Verdict
This is a performance-first formula engineered for extreme durability, not ingredient minimalism. The base is dominated by Isododecane, Methyl Trimethicone, and Trimethylsiloxysilicate; a trio designed to evaporate fast, set hard, and resist water for the promised 16 hours. The optical array (Borosilicates, Synthetic Fluorphlogopite) adds dimensional finish, and the organoclay suspension keeps pigments stable in an anhydrous base. It's technically sophisticated and efficacy-proven, but the synthetic silicone-resin network and trace preservative system score a 1.0 on Clean and 5.9 on Sustainability. Worth it if you need bulletproof wear and don't mind the trade-off; skip it if clean formulation is the priority.
Full INCI list
Isododecane, Methyl Trimethicone, Polyethylene, Trimethylsiloxysilicate, Disteardimonium Hectorite, Tocopheryl Acetate, Lecithin, Ceramide Ng, Phenyl Trimethicone, Silica, Tin Oxide, Synthetic Fluorphlogopite, Calcium Aluminum Borosilicate, Calcium Sodium Borosilicate, Triethoxycaprylylsilane, Propylene Carbonate, Barium Sulfate, Caprylyl Glycol, Hexylene Glycol, Hydrogenated Polyisobutene, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Phenoxyethanol, \ +/- Mica, Titanium Dioxide (Ci 77891), Iron Oxides (Ci 77491), Iron Oxides (Ci 77492), Iron Oxides (Ci 77499), Aluminum Powder (Ci 77000), Bismuth Oxychloride (Ci 77163), Blue 1 Lake (Ci 42090), Bronze Powder (Ci 77400), Carmine (Ci 75470), Chromium Hydroxide Green (Ci 77289), Chromium Oxide Greens (Ci 77288), Copper Powder (Ci 77400), Ferric Ammonium Ferrocyanide (Ci 77510), Ferric Ferrocyanide (Ci 77510), Manganese Violet (Ci 77742), Ultramarines (Ci 77007), Yellow 5 (Ci 19140)\