Commonly listed finishes include matte, satin, natural (sheer) and illuminating/pearlescent. Product pages typically use these terms to describe the look and sheen of the formula.
Many felt-tip eyeliners advertise high or hyper-pigmented formulas that deliver rich, intense color—especially in black shades.
Product listings commonly note suitability for combination, oily, sensitive, normal, dry and mature skin types. A subset of products also mentions ophthalmologist testing for sensitive eyes.
Common tip styles include ultra-fine felt tips, pen-style felt tips, and brush-style felt tips—each enabling precise thin lines or bolder strokes depending on pressure and angle.
Typical features include built-in brush or brush-style felt tips, glide-on/smooth application, easy-grip pen designs, and precision felt tips for controlled strokes.
Certifications and seals appearing in listings include Leaping Bunny, PETA cruelty-free mentions, EWG Verified, and Fair Trade Certified.