define a line eyeliner

Eyeliner finishes commonly include matte, shimmer, satin and semi-matte. Color offerings frequently emphasize dark and medium tones as standard options.

Ultra-fine tips, brush or felt tips, and precision felt or fine brush-felt applicators are commonly used to enable controlled, precise lines.

Some formulations are labeled ophthalmologist- or dermatologist-tested, fragrance-free, and explicitly suitable for sensitive eyes and contact lens wearers; listings may also note compatibility with sensitive skin.

Net weights and volumes vary by format. Example values seen in listings include .28 grams, .03 fl oz (US), .02 fl oz (US), and .01 ounces.

Features include built-in smudgers, smudge-proof-but-blendable formulas, and blendable pencil formats designed to soften liner or create a smoked effect.

Descriptions emphasize ultra-fine or precision tips and sometimes reference tools like removable wing stencils or ultra-fine felt tips to help deliver crisp wings and controlled strokes.