Numerous eyeliner brands are certified cruelty-free, including Pacifica, Urban Decay, and NYX Professional Makeup. Look for the Leaping Bunny or PETA certification logo on packaging to confirm a brand's commitment to avoiding animal testing.

Many makeup lines are dedicated to cruelty-free practices. Popular options include e.l.f. Cosmetics, Milk Makeup, and ColourPop. Researching a brand's animal testing policy on their website is always recommended before purchasing.

The "healthiest" eyeliner often refers to options with fewer potentially irritating ingredients. Consider eyeliners formulated with natural or organic ingredients and those that are hypoallergenic or ophthalmologist-tested, especially for sensitive eyes.

Revlon is not considered a cruelty-free brand. While they may not test on animals in some locations, they do sell their products in markets where animal testing is required by law.