Physicians Formula Eye Booster Lash-Enhancing 2‑in‑1 Eyeliner Serum — Deep Brown, Water‑Resistant & Hypoallergenic

Physicians Formula Eye Booster is a two-in-one liquid eyeliner and lash-enhancing serum that defines the lash line instantly while delivering a conditioning Lash Boosting complex to lashes' roots.

This dual-action pen gives you crisp, long-wearing liner with the added benefit of a formula designed to target the base of your lashes. The pigment offers immediate definition in a rich Deep Brown, while the proprietary Japanese-derived formula is water-resistant, smudge-resistant, and created for sensitive eyes. Dermatologist-approved and hypoallergenic, the product is cruelty-free and vegan—intended to be gentle for contact lens wearers and those with delicate skin around the eye.

How does this product combine eyeliner and lash care?

The Eye Booster works as a precision liquid eyeliner and simultaneously deposits a Lash Boosting complex along the lash base. In one application you get dark, clean definition plus ingredients aimed at conditioning the lash area where it matters most.

• Felt-tip applicator for precise, even strokes
• Lash Boosting complex targets lash roots rather than tips
• Buildable Deep Brown pigment for soft or striking looks
• Water- and smudge-resistant finish for long wear

Will this work for sensitive eyes or contact lens wearers?

Physicians Formula formulates this liner with sensitivity in mind: it is hypoallergenic and dermatologist-approved, minimizing common irritants. The vegan, cruelty-free formula is manufactured without a long list of harsh ingredients often linked to irritation.

• Hypoallergenic ingredients suitable for sensitive skin
• Dermatologist-approved for safer eye-area application
• Formulated without 150+ known harsh chemicals
• Safe for contact lens wearers when applied as directed

How long does the eyeliner stay put and how does it handle humidity?

The high-tech Japanese formula is engineered to resist water and smudging, giving you clean liner that lasts through a busy day. While it performs well under normal humidity and mild moisture, typical makeup-removal methods are recommended for removal.

• Smudge-resistant for everyday wear
• Water-resistant for light exposure to moisture
• Easy-to-control application for thin or bold lines
• Removes with standard oil-based makeup remover

How do I use the Eye Booster to get the best results?

Apply along the upper lash line from inner to outer corner using small, steady strokes; you can build intensity progressively. For added effect, allow each pass to set briefly before layering; focus the tip of the applicator at the lash base to deliver the Lash Boosting complex where it counts.

• Start with a thin line near the inner corner and thicken outward
• Use short strokes for control and a smooth finish
• Let the formula dry fully to avoid transfer
• Pair with mascara or eyeshadow for enhanced definition

Who this is for: Ideal for anyone who wants the instant impact of a precise liquid liner and the targeted care of a lash-enhancing serum in one product—especially those with sensitive eyes, contact lens users, and shoppers seeking vegan, cruelty-free cosmetics. If you prefer an effortless, multi-tasking step in your makeup routine that minimizes products while maximizing polished eye definition, this Deep Brown Eye Booster is made to simplify and enhance your daily look.

Ingredients

Water. Ethylhexyl Acrylate/Methyl Methacrylate Copolymer. Butylene Glycol. Glycerin. Beheneth-30. Ammonium Acrylates/Methyl Styrene/Styrene Copolymer. Myristoyl Pentapeptide-17. 1,2-Hexanediol. Acrylates/Octylacrylamide Copolymer. Caprylyl Glycol. Ceteth-20. Ethylhexylglycerin. Pentylene Glycol. Polyglyceryl-3 Disiloxane Dimethicone. SD Alcohol 40. Sodium Polyaspartate. Phenoxyethanol. Sodium Hydroxide. Disodium EDTA. Black 2. Iron Oxides.