Custom mascara and eyeliner boxes are built to protect slim cosmetic tubes while presenting them attractively on the shelf. Designed to prevent crushing and preserve product integrity, these boxes often include inserts or snug-fit compartments to hold items steady. You can customize size, material, printing, and finishes to match your brand look — soft-touch, matte, or gloss finishes work well for premium cosmetics. The Boxes Co. can help specify the right structural design and finishing options so the packaging feels polished and secure without extra bulk.