Physicians Formula Eye Booster Lash-Enhancing Liquid Eyeliner — Blackest Black, Waterproof Conditioning Serum

Physicians Formula Eye Booster is a waterproof, ultra-fine liquid eyeliner that delivers intense black definition while depositing a lash-conditioning serum at the lash base.

This dual-action liner pairs the precision of a liquid pen with a lightweight lash-conditioning complex designed to fortify and smooth the look of lashes over time. The formula uses concentrated Blackest Black pigments for striking color payoff, a quick-dry ink finish to minimize smudging, and is dermatologist approved, hypoallergenic, cruelty-free and vegan. It’s formulated for combination skin types and created to perform during daily wear while contributing conditioning actives where the lashes meet the lash line.

How does the Eye Booster create sharp, long-lasting eyeliner looks?

The ultra-fine tip deposits a controlled line of highly pigmented, waterproof ink for crisp definition that resists running. The fast-dry finish reduces transfer and lets you layer product or flick wings without smudging. Because the pigment is concentrated, one pass is often enough for full coverage.

• Precision felt-tip applicator for thin to bold lines
• Intense Blackest Black pigment for single-stroke payoff
• Waterproof complex and quick ink-dry formula for longer wear
• Minimal feathering on combination skin

What does the lash-enhancing serum do and how is it applied?

The product deposits a lightweight lash-conditioning complex at the base of the lashes as you line the eyes, so conditioning ingredients contact lash roots with regular use. It’s not a medical treatment; instead it helps smooth and condition the lash surface to improve overall appearance. Apply the pen along the upper lash line as you would any liquid liner.

• Lash-conditioning peptides and serum concentrate at the lash base
• Designed for daily application during regular lining routines
• Helps improve lash appearance through consistent topical contact

Is this eyeliner safe for sensitive eyes and easy to remove?

Physicians Formula formulates this liner to be dermatologist approved and hypoallergenic, reducing common irritation triggers. While the waterproof complex offers long wear, the product removes with an oil-based or micellar makeup remover without aggressive rubbing. Always patch test new eye products if you have known sensitivities.

• Dermatologist approved and labeled hypoallergenic
• Removes cleanly with oil-based or micellar removers
• Cruelty-free and vegan formulation

Who this is for: This eyeliner is aimed at anyone seeking the deep, bold look of liquid liner with the added benefit of lash-conditioning actives—people who wear eyeliner daily, want a waterproof, smudge-resistant finish, or prefer a product vetted for sensitive skin. It’s a good match for makeup users who like precise lines, need reliable wear for busy days or events, and value cruelty-free, vegan choices in their beauty routine.

Ingredients

INGREDIENTS: WATER/EAU, ACRYLATES/ETHYLHEXYL ACRYLATE COPOLYMER, PROPYLENE GLYCOL, LAURETH-21, ACRYLATES/DIMETHYLAMINOETHYL METHACRYLATE COPOLYMER, PEG-40 HYDROGENATED CASTOR OIL, PHENOXYETHANOL, SODIUM DEHYDROACETATE, SODIUM LAURETH-12 SULFATE, CAPRYLYL GLYCOL, ETHYLHEXYLGLYCERIN, C11-15 PARETH-7, BUTYLENE GLYCOL, POTASSIUM SORBATE, DEXTRAN, ACETYL TETRAPEPTIDE-3, TRIFOLIUM PRATENSE (CLOVER) FLOWER EXTRACT, BLACK 2 (CI 77266). [1901-1]