Create a Dark Siren Makeup look for an easy DIY siren costume Halloween outfit! This sultry siren makeup is perfect for a goth mermaid costume, siren cosplay mermaid, or mermaid for Halloween. Achieve bold siren eyes with deep, smoky shades for an ethereal costume Halloween look. Whether you're going for a mermaid fairy costume or a sea creature costume DIY easy, this look will enchant and mesmerize! #TrendsChallenge2025 #SeaWitchery #DarkSirenMakeup