Many of the formulas are labeled hypoallergenic and ophthalmologist-tested and explicitly state they are suitable for contact lens wearers or for sensitive eyes.
Some formulas list conditioning ingredients such as coconut oil, vitamin B, kelp, and rose hip oil to help nourish and condition lashes.
Brush styles include curved or custom curl brushes, larger ‘big’ brushes for buildable volume, small/precision brushes for corner-to-corner application, multi-layer/fanning bristle brushes, and dual-action or dual-sided applicators.
Some listings highlight recyclable packaging, cruelty-free or vegan formulations, and packaging that contains post-consumer recycled content.