Welcome to Cosie, a brand-new nail spa in St. Catharines, Ontario, created to make your nail experience feel personal, comfortable, and effortlessly beautiful.

From natural nail care and relaxing manicures to custom designs, extensions, and more, we’re here to create looks that fit your style. Have a photo you love? Send us your inspiration. Know exactly what you want—or just have a general idea? Tell us what you like, and we’ll bring your vision to life.

At Cosie, it’s all about thoughtful details, beautiful nails, and a little time to yourself. Book anytime with our convenient 24/7 online booking, and let your nails tell your story.