Although, unless you were just born with the longest, most doe-eyed lashes, encouraging length is a bit of a struggle. Here, six science-backed, dermatologist-approved ways to put in the work: Specifically, castor oil contains ricinoleic acid, a fatty acid that has antioxidant and anti-inflammatory properties. The oil is also chock-full of vitamin E, which can help protect those hairs from environmental aggressors. Finally, castor oil is both an emollient and an occlusive. What does this mean? Well, it’s able to penetrate into the strands and keep moisture from seeping out in one fell swoop. Bonus: Mascaras infused with moisturizing ingredients tend to clump less, as the formula isn’t typically as drying. Although, it’s a lot less maintenance than keeping your scalp buildup- and flake-free. No need to reach for a clarifying solution (ouch): When washing your face, just make sure to massage a gentle cleanser into the lids as well. Be careful not to drag or tug—keep a feathery-light pressure. Lashes are delicate and fine, and even the smallest of errors can pluck out those hairs with ease: Things like rubbing and tugging at the eyes (both with your palms and a harsh makeup remover), curling your eyelashes with death-grip force, and using irritating eye makeup can cause those lashes to weaken (and perhaps fall out). If you frequently find lashes littered across your pillow come morning, they’re probably begging for some tender care.