Introducing the Brat Lip Oil Stain, a pH-activated formula inspired by Charli XCX's latest album, "Brat." This innovative lip oil transforms into a stunning pink tint upon contact with your lips' natural pH and temperature. Embracing a cute Y2K vibe, the color adapts to your unique pH level, ranging from a delicate baby pink to a vibrant, bold hot pink. Experience personalized color and effortless style with this must-have lip essential.