Lancôme Cils Booster XL Lash Primer — Clear Fiber-Infused Primer for Length & Volume

This clear, fiber-infused primer is designed to be applied before mascara to amplify its effect and to help lashes appear fuller and longer. The lightweight formula layers comfortably without clumping, and it contains micro-fibers plus vitamins B5 (D-Panthenol) and E to support lash resilience. Use it as a base step in your eye routine to create a more dramatic, long-lasting mascara finish while helping lashes feel softer over time.

How does this primer change my mascara results?

Applied under mascara, the primer adds structure and buildable texture so your mascara can grip each lash more effectively. The micro-fibers bridge gaps and extend tips, producing noticeable length and a denser appearance without heavy product buildup.

• Creates a tacky, even base that mascara adheres to
• Fibers add visible length and fill sparse areas
• Helps separate lashes for a fanned, volumized look

Will it feel heavy or make lashes flaky?

The formula is crafted to remain lightweight and smooth, minimizing clumps and flaking when layered correctly with mascara. Its soft-fluff brush deposits an even coat from root to tip, preventing overloaded sections and keeping lashes flexible through wear.

• Light texture avoids weighty buildup
• Brush design ensures uniform product distribution
• Pairs with most mascaras without causing brittleness

What nourishing benefits are included for lash health?

Beyond cosmetic enhancement, the primer includes D‑Panthenol (pro-vitamin B5) and vitamin E to help condition and protect the lash fiber surface. Regular use supports smoother, softer lashes that look healthier while you wear makeup.

• D-Panthenol helps retain moisture and flexibility
• Vitamin E adds antioxidant support to the lash area
• Micro-fibers provide immediate visual improvement without harsh ingredients

Is this suitable for sensitive eyes and contact lens wearers?

This primer is formulated to be gentle and is appropriate for most sensitive eyes and those who wear contact lenses. As with any eye product, avoid direct contact with the eye itself and discontinue use if irritation occurs.

• Suitable for sensitive eyes when used as directed
• Compatible with contact lens wear in typical wear scenarios
• Designed to be non-irritating when properly applied

Who is this for? Lancôme Cils Booster XL is aimed at anyone who wants to intensify their mascara’s performance—especially users seeking extra length, lift and a fuller lash line without heavy, flaky layering. It suits makeup lovers who prefer a buildable, clean-feeling base that also delivers conditioning benefits, as well as those with sensitive eyes or contacts who need a reliable, easy-to-apply primer.

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).