Many of us take our abilities for granted, and it can be easy to overlook how having steady hands makes everything from making lunch to applying makeup super easy. But our ability to flick an eyeliner wing, paint on eyebrows hair by hair, or even comb mascara through our lashes could one day change. That's what happened to makeup artist Terri Bryant.

While working on a photoshoot about 10 years ago, Bryant could instinctually feel that something wasn't right. At this point, she had been working in the beauty industry for more than a decade. Applying makeup was almost like a reflex for her, yet the model in her makeup chair that day took far longer to complete than usual. "I didn't know why, but I kind of ignored it, and similar things were happening [to my body] along the way," she recalls to Allure.

Five years later, she was diagnosed with Parkinson's Disease, a nervous system disorder that can cause tremors and loss of balance, among other symptoms. As soon as she received her diagnosis, Bryant feared she might completely lose her ability to apply makeup due to shaking hands. "It wasn't just my livelihood, but it was my creative outlet and the way that I've connected with women and men over the years," she says. "I didn't want to let it go."

Her changing abilities have since required her to rethink the tools she uses to apply makeup. Many of her traditional tools weren't providing the stability she needed and knew was achievable, so she starting meeting with ergonomic experts and developing her own. That research and dedication resulted in Guide Beauty, her new cosmetics brand. Guide is not just a makeup brand; it's also dedicated to makeup education and expanding the idea of how makeup tools should work.