MAC Waterproof Mascara Black Stack (.41 fl oz) — Buildable Volume, Smudge-Proof Finish

M·A·CStack Waterproof Mascara in Black Stack is a continuously buildable, clump-resistant mascara that delivers customizable volume and length in a waterproof, smudge-proof formula.

Designed for those who want dramatic lashes without flaking or running, this M·A·C mascara lets you layer coats to achieve everything from natural definition to bold, stage-ready volume. The formula resists water and tears while staying smooth and workable, and its brush spreads product evenly so each lash receives separation and lift. Packaged in a .41 fl oz / 12 mL tube, Black Stack provides a deep, true black finish that enhances contrast and definition for day-to-night wear.

How does M·A·CStack create buildable volume without clumps?

The formula balances creamy pigments with film-forming agents that allow you to add multiple coats without the lashes sticking together. Its texture is neither too wet nor too dry, so each pass stacks evenly instead of leaving thick clumps. The applicator is designed to coat lashes uniformly, separating fibers while concentrating product at the roots for lift.

• Soft, non-sticky formula for layering
• Brush design that separates and fans lashes
• Even pigment distribution to avoid patchiness

Will this mascara stay put through sweat, rain, or tears?

M·A·CStack is formulated to be water-resistant and smudge-proof, helping it remain intact during humid days, light rain, or emotional moments. It’s engineered to resist common causes of mascara migration, so you get longer wear without run marks beneath the eyes. Remove with an appropriate makeup remover to dissolve the long-wear film safely.

• Waterproof and smear-resistant finish
• Stable wear in humid or wet conditions
• Requires oil-based or dual-phase remover for gentle removal

How does the applicator shape affect length and separation?

The wand deposits product at the root and combs through the lash line to create lift and visible length. Its bristle arrangement helps separate individual lashes while building bulk toward the tips, so you achieve both thickness and elongation. The tool design also helps reach smaller corner lashes for a fuller overall effect.

• Root-focused application for lift
• Bristles that separate and define each lash
• Designed to reach inner and outer lash corners

How should I layer and remove this mascara for best results?

Apply a light initial coat and allow it to set for a few seconds before adding more to avoid clumping. For dramatic volume, repeat short strokes rather than one heavy pass. To remove, use a quality oil-based cleanser or dual-phase eye makeup remover and gentle pressure to dissolve the film without rubbing or tugging.

• Build in thin layers for controlled volume
• Short, upward strokes maximize separation
• Use oil-based remover for safe, complete removal

Who is this for? M·A·CStack Waterproof Mascara in Black Stack suits anyone seeking a flexible mascara that scales from natural-enhancing to full-on volumizing without smudging. It’s a good match for people with active lifestyles, those who live in humid climates, wear contact lenses, or need dependable eye makeup for special events and long days. If you prefer a mascara that holds up against moisture and offers precise layering control, this product delivers performance and a rich black finish in a compact, travel-ready tube.

Ingredients

Isododecane, Water\Aqua\Eau, Nylon-12, Dimethicone Silylate, Sorbitan Olivate, Trisiloxane, Sorbitan Tristearate, Kaolin, Silica Silylate, Polyisobutene, Copernicia Cerifera (Carnauba) Wax\ Copernicia Cerifera Cera \Cire De Carnauba, Trihydroxystearin, Diisopropyl Adipate, Cholesterol, Pantethine, Methicone, Caprylyl Glycol, Panthenol, Trimethylsiloxysilicate, Hexylene Glycol, Propylene Carbonate, Silica, Nylon-6, Microcrystalline Wax\Cera Microcristallina\Cire Microcristalline, Hectorite, Quaternium-90 Bentonite, Citric Acid, Phenoxyethanol, Magnesium Salicylate, Potassium Sorbate, Iron Oxides (Ci 77499), Mica, Titanium Dioxide (Ci 77891) ILN50368