Physicians Formula Eye Booster Lash-Enhancing Eyeliner Serum — Ultra Black, Precision Brush & Lash-Conditioning

This 2-in-1 formula combines the precision of a pigmented liquid liner with a lash-boosting complex designed to work at the base of the lashes. Dermatologist approved, hypoallergenic, cruelty-free, and vegan, the Ultra Black shade gives a deep, lasting line for everyday wear or dramatic looks. The product is made to be safe for sensitive eyes and can be used alone as a conditioning treatment or layered under makeup for added definition.

How does this product define my eyes on application?

The fine brush tip deposits smooth, high-pigment Ultra Black ink for clear, sharp lines in a single stroke. It hugs the lash line to create the illusion of denser lashes while delivering a polished, long-wearing finish that resists smudging when applied to clean lids.

• Precision brush for thin or bold lines
• Ultra Black pigment for instant definition
• Fast-drying formula that layers well with mascara
• Suitable for tightlining and winged looks

What lash improvement can I expect with regular use?

The lash-boosting complex targets the base of the lashes where it can most effectively condition and improve the look of length, volume, and thickness. In consumer testing, most participants reported visible enhancement within weeks when using the serum consistently.

• 75% of women reported longer, fuller lashes after 2 weeks
• Over 91% noticed enhanced lashes after 4 weeks (panel perception)
• Can be used nightly alone or under eye makeup for ongoing conditioning

Is this safe for sensitive eyes and contact lens wearers?

Physicians Formula formulates this eyeliner-serum with sensitivity in mind: it is dermatologist approved, hypoallergenic, and free of 150+ harsh ingredients commonly avoided in sensitive skin care. The gentle recipe is designed to minimize irritation when used as directed, though individual tolerance can vary.

• Hypoallergenic formula tested for sensitive skin
• Dermatologist approved and fragrance-free
• Vegan and cruelty-free production standards

How do I use the 2-in-1 eyeliner and serum for best results?

Apply the liquid liner along the upper lash line for instant definition; for conditioning benefits, apply a thin line at the lash base nightly or beneath makeup. Consistent application is key to seeing progressive changes in lash appearance over several weeks.

• Use the brush to draw precise lines or tightline the roots
• Apply nightly as a serum or daytime under makeup
• Remove gently with a mild eye makeup remover before sleep

Who is this for: This 2-in-1 liner-serum is ideal for anyone who wants the convenience of instant eye definition plus a conditioning treatment in one product. It suits people with sensitive eyes, those who prefer vegan and cruelty-free cosmetics, and anyone seeking noticeable lash enhancement without adding multiple steps to their routine.

Ingredients

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