Background: Packaging serves as a crucial communication instrument in fast-moving consumer goods marketing. Visual components, including typography, icons, colour, layout, and materials, communicate product information and quality indicators, thereby affecting consumer trust. This study examines how these components and foundational psychological frameworks (e.g., trust development, dual-processing, signaling) influence trust perceptions. Methods: This systematic study consolidates findings from scholarly journals, market analyses, and design literature about packaging design and customer trust. We incorporate ideas of consumer psychology (e.g., heuristic versus systematic processing) and cross-cultural design research (e.g., analytic versus holistic cognition) to analyse outcomes. Results: Empirical research repeatedly demonstrates that distinct, high-quality packaging indicators (e.g., legible text, authentic product imagery, informational iconography) augment perceived credibility. Reliable indicators encompass recognizable typefaces, credible certification symbols, and harmonious colour palettes. Cultural context is significant: for instance, Chinese consumers favour expressive (calligraphic) fonts and comprehensive design, while Western consumers prefer minimalist sans-serif fonts and distinct characteristics. Colour symbolism varies throughout markets (e.g., white signifies purity in the West yet denotes grief in certain Asian cultures). Conclusions: Packaging design utilizes semiotic and design concepts as indicators of quality. Reliable design elements function through heuristic (peripheral) pathways under minimal participation, while also facilitating central processing of product information. Consequences: The results underscore the necessity for culturally tailored design standards in FMCG packaging. Marketers must customize font, iconography, colour, and texture elements to resonate with target markets in order to establish brand confidence.