Deanna Giulietti is an actress and activist. While much of her TikTok is devoted to pop culture, Giulietti strayed from her usual format to share an intriguing mascara hack. No, it’s not one that will get you longer or fuller lashes, it’s a lot bigger in scope than that — it helps animals in oil spills.   “If you have an old mascara that you’re going to throw away. Don’t throw it away,” she explains. “Instead wash it with some Dawn, put it in a Ziplock bag and mail it to Wildlife Refuge.” Giulietti is referring to Appalachian Wildlife Refuge’s Wands for Wildlife program.   “They use these wands to scrape away oil and mites and infections from wildlife. C’mon, we’re saving the animals!” she says.   To mitigate an influx of wand donations, the refuge only accepts them twice a year. Luckily, six months to a year is about how long a mascara usually lasts anyway. You can send your spoolie brushes in October and April every year to the address below:   Appalachian Wildlife Refuge P.O. Box 1211, Skyland, N.C. 28776   Quite unsurprisingly, Giulietti’s informative tip received 1.6 million views. Mascara-lovers were excited by the idea.   “This is a PSA we all need printed in big bold letters on the bottle,” one TikTok user said.   “Wouldn’t it be cool if mascara brands would advertise this or even include instructions and address labels?” another wrote.   “I do this but they only take them at certain times of the year. So stockpile!” one person suggested.   If you’re dying to get rid of those mascara wands ASAP, however, you can recycle them and other cosmetic packaging with TerraCycle.