Customization enhances personal connection but also influences the doll’s durability. Each added feature—hair, eyelashes, skin texture, or customized markings—creates additional points where wear can occur. High-quality, properly installed modifications with reinforced attachments distribute stress across a broader area and reduce localized wear. However, complex modifications may require more frequent maintenance, especially at joint intersections or attachment seams. Lighting, temperature, and humidity interact with materials; extreme conditions can cause expansion, contraction, or surface degradation, especially in softer elastomers. Custom coloring or paintwork should be applied by skilled artisans using compatible solvents to avoid crackling or peeling. Regular inspections become crucial: changes in tone, stiffness, or surface feel can signal the need for professional servicing. The upside is a more expressive, personalized, and emotionally resonant product that remains functional for longer when care routines are aligned with the doll’s materials and construction. Thoughtful customization, paired with proactive maintenance, supports both longevity and satisfaction.