Lancôme Cils Booster XL Lash & Mascara Primer Full Size — Fiber-Enriched, Conditioning Vitamin E

Lancôme Cils Booster XL is a lash primer that primes, lengthens and conditions lashes to amplify mascara performance and create fuller-looking, smoother lashes.

Designed as the first step in your eye makeup routine, this full-size lash and mascara primer builds a lightweight, fiber-enriched base that helps your mascara grip, appear thicker and go on more evenly. The formula combines micro-fibers, vitamin E and D-Panthenol to visibly enhance texture while remaining suitable for sensitive eyes and contact lens wearers. Use alone for a naturally lifted look or layer under your favorite mascara for extra drama without added clumps.

How does this primer change the way mascara appears?

The primer deposits micro-fibers and conditioning agents that extend and thicken each lash, creating a fuller silhouette for mascara to enhance. Mascara applied over the primer spreads more evenly and adheres better, so you get amplified length and volume with less product buildup.

• Creates a textured base that mascara can grip for increased length.
• Builds volume without weighing lashes down or causing clumps.
• Improves mascara wear and distribution for smoother application.

Will this primer help lashes look healthier over time?

While its primary role is cosmetic, the primer contains vitamin E and D-Panthenol, ingredients known for conditioning and softening. Regular use helps lashes appear nourished and less brittle, supporting a healthier look between mascara applications.

• Vitamin E provides antioxidant support to help maintain lash texture.
• D-Panthenol conditions and reduces the appearance of dryness.
• Micro-fibers coat lashes gently without stiffening or flaking.

How do I apply Cils Booster XL for best results?

Apply the primer directly to clean, dry lashes using its soft-fluff brush. Sweep from root to tip to coat each lash, allow a few seconds to settle, then apply mascara as usual for enhanced volume and length.

• Use the brush to separate and coat lashes from base to tip.
• Wait briefly before applying mascara to avoid dragging or clumping.
• Pair with waterproof or regular mascara depending on desired finish.

Is this primer safe for sensitive eyes and contact lens wearers?

Yes — the formula is crafted to be gentle and suitable for sensitive eyes and those who wear contact lenses. Its soft-fluff applicator minimizes tugging, and the lightweight texture reduces the risk of irritation or flaking into the eye.

• Formulated for comfort with minimal risk of irritation.
• Non-stiffening formula reduces airborne flakes and smudging.
• Brush design allows precise application without pulling lashes.

Who is this for? Lancôme Cils Booster XL is ideal for anyone who wants to boost mascara performance and achieve visibly longer, fuller lashes—whether you prefer a natural daytime look or a bold, volumized finish. It suits all lash types, including shorter or finer lashes, and caters to people seeking gentler formulas for sensitive eyes or contact lens wear. Use it solo for subtle enhancement or as a base to amplify your go-to mascara for an intensified effect.

Ingredients

POLYBUTENE • PENTAERYTHRITYL TETRAISOSTEARATE • C18-36 ACID TRIGLYCERIDE • TRIDECYL TRIMELLITATE • BIS-DIGLYCERYL POLYACYLADIPATE-2 • SILICA DIMETHYL SILYLATE [NANO] / SILICA DIMETHYL SILYLATE • CALCIUM SODIUM BOROSILICATE • PENTYLENE GLYCOL • CAPRYLYL GLYCOL • MICA • PENTAERYTHRITYL TETRA-DI-T-BUTYL HYDROXYHYDROCINNAMATE • CI 77891 / TITANIUM DIOXIDE • CI 77491 / IRON OXIDES • BENZYL BENZOATE • BENZYL ALCOHOL • TIN OXIDE • CI 45380 / RED 22 LAKE • ALUMINA • CI 15985 / YELLOW 6 LAKE • GERANIOL • LIMONENE • PARFUM / FRAGRANCE (F.I.L. B253649/1).