Physicians Formula Eye Booster Lash-Enhancing 2-in-1 Eyeliner Serum — Black, Long-Wearing & Hypoallergenic

Physicians Formula Eye Booster is a dual-action liquid eyeliner that defines the lash line immediately while delivering a lash-enhancing serum at the base of lashes for conditioned, fuller-looking results over time.

This high-tech, Japanese-formulated pen combines precise liquid liner performance with a lash-boosting complex that targets the base of lashes where conditioning is most effective. Designed for sensitive eyes, the formula is dermatologist approved, hypoallergenic, vegan and cruelty-free. It’s long-wearing, water-resistant and smudge-resistant, giving clean definition plus ongoing lash care in one easy step.

How does the Eye Booster work as both eyeliner and lash serum?

The pen delivers an immediate pigmented line while dispensing a conditioning complex to the lash roots, so you get instant definition and a treatment benefit with regular use. The applicator is engineered for precise control so serum contacts the lash base without compromising the liner’s crispness.

• Fine-tipped liquid applicator for accurate lining
• Targeted formula applies to lash base where it matters most
• Daily use combines cosmetic and conditioning benefits

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

Yes — the product is hypoallergenic and dermatologist tested to be gentle on sensitive eyes. It’s formulated without common harsh ingredients and is suitable for contact lens wearers when used as directed.

• Fragrance-free, paraben-free and gluten-free formulation
• Dermatologist tested and clinically evaluated for sensitivity
• Vegan and cruelty-free manufacturing standards

How long does the wear last and how does it resist smudging?

The liner’s Japanese-developed formula is designed to be long-wearing and water-resistant, so lines stay defined through normal wear. The smudge-resistant finish helps maintain a clean look from morning to evening with minimal touch-ups.

• Water-resistant base for humidity and light moisture protection
• Smudge-resistant pigments for lasting definition
• Quick-dry formula reduces transfer during application

How should I apply it for best results and what can I expect over time?

Apply as you would a liquid liner along the upper lash line, keeping strokes close to the roots to deposit the lash-conditioning complex. With consistent daily use, lashes appear more conditioned at the base; cosmetically, you’ll enjoy the sharp, black definition of a liquid liner immediately.

• Begin at the inner corner and draw short strokes toward outer corner
• Keep the tip angled close to lash roots for serum contact
• Use daily for combined instant definition and ongoing conditioning

Who is this for: This 2-in-1 eyeliner serum is aimed at anyone seeking the precision and finish of a liquid eyeliner plus the added benefit of lash conditioning—especially people with sensitive eyes, contact lens wearers, or those who prefer vegan and cruelty-free beauty products. It suits users who want a low-effort, multi-tasking step in their eye routine: immediate bold definition plus targeted lash base care without adding a separate serum step.

Ingredients

Water. Ethylhexyl Acrylate/Methyl Methacrylate Copolymer. Butylene Glycol. Beheneth-30. Glycerin. Ammonium Acrylates/Methyl Styrene/Styrene Copolymer. Myristoyl Pentapeptide-17. 1,2-Hexanediol. Acrylates/Octylacrylamide Copolymer. Caprylyl Glycol. Ethylhexylglycerin. Pentylene Glycol. Polyglyceryl-3 Disiloxane Dimethicone. SD Alcohol 40. Sodium Polyaspartate. Phenoxyethanol. Sodium Hydroxide. Disodium EDTA. Black 2. Ferric Ammonium Ferrocyanide. Iron Oxides. Titanium Dioxide.