MAC Superstack Waterproof Mascara Black — Mega Brush for Buildable Volume & Length

MAC Stack Superstack Mega Brush Waterproof Mascara builds dramatic, layerable volume and length with a larger brush for bold lashes that stay put.

This waterproof formula from MAC gives you buildable thickness and measurable length without heavy clumping. The Superstack Mega Brush is designed to coat individual lashes from root to tip so you can add multiple layers for a customized finish—from defined and full to intense and theatrical—while the waterproof finish resists smudging and fading through daily wear.

How does the Mega Brush create more volume and length?

The oversized brush reaches longer and upper lashes more effectively than standard wands, separating and lifting each lash as you apply. Its shape deposits more pigment and product along the lash line, so a single pass gives visible impact and additional layers build without a crunchy feel.

• Large bristles coat lashes evenly for fuller appearance
• Brush profile lifts lashes to maximize length effect
• Formulation balances pigment and flexibility to avoid clumps

Will this mascara hold up through humidity, sweat, or rainy days?

MAC’s waterproof version is formulated to resist water, humidity, and light moisture, helping maintain your look throughout the day. It dries to a long-wearing finish that reduces smudging and migration while still allowing you to layer for desired intensity.

• Water-resistant formulation protects against smudging
• Long-wear finish minimizes feathering under humidity
• Remains flexible so multiple coats don’t flake

How do you build multiple layers without clumping?

The product is designed for continuous buildability: apply one coat, let it set briefly, then apply additional coats to intensify volume and length. The brush deposits product evenly while the formula stays workable between coats, which helps preserve separation and avoids the heavy, stuck-together lash effect.

• Apply thin, controlled strokes starting at the root
• Allow short drying time before adding coats for best separation
• Wiggling the wand at the base adds lift and curl-like effect

How do I remove MAC Superstack Waterproof Mascara safely?

Waterproof formulas require an effective remover; use a dedicated oil-based or waterproof makeup remover to dissolve product gently. Soak a cotton pad, hold for a few seconds to loosen pigment, then glide downward—avoid harsh rubbing to protect lashes.

• Use oil-based or bi-phase makeup remover for quickest results
• Press and hold the pad briefly before wiping to reduce tugging
• Follow with a gentle cleanser to remove residue

Who is this for: MAC Stack Superstack Mega Brush Waterproof Mascara is ideal for anyone seeking dramatic, customizable volume and length—particularly those with longer lashes or anyone who wants a buildable, long-lasting mascara that won’t smudge in humid conditions. It suits makeup lovers who prefer a bold lash look that can be intensified without flakes or clumps, and users comfortable removing waterproof formulas with proper removers. If you want control over how dramatic your lashes appear while relying on a professional-grade waterproof finish, this MAC mascara is designed to deliver.