Tomato (Solanum lycopersicum) is widely consumed for its nutritional value and diverse bioactive constituents, including carotenoids, vitamins, and polyphenols. Traditionally recognized as a dietary antioxidant source, tomato intake has increasingly been discussed in relation to skin health. Experimental studies suggest that tomato-derived compounds help modulate oxidative stress, inflammation, melanogenesis-related pathways, and extracellular matrix degradation, which are relevant to skin aging, pigmentation, and structural maintenance. Carotenoid-rich tomato products have been reported to help protect against ultraviolet-induced skin damage. Despite this, current evidence remains heterogeneous because of variations in cultivars, ripening stages, processing conditions, and experimental models, and human intervention studies are comparatively limited. This review summarizes the available evidence on the skin-related effects of tomato-derived bioactive compounds and outlines the considerations for their application in inner beauty functional ingredients.