Brittle cuticles are commonly associated with dryness, repeated wet-dry cycling, low environmental humidity, friction, harsh cleansing exposures, low fluid intake, inadequate intake of plant minerals, reduced antioxidant availability, and poor support for normal skin barrier renewal. The cuticle is a thin protective extension of the epidermis that helps seal the nail plate and nail fold. When this tissue loses flexibility, hydration, and lipid organization, it may split, peel, fray, or become rough around the nail edge. Cuticle resilience depends on healthy epidermal turnover, adequate water balance, collagen support, keratin-associated protein structure, antioxidant defense, micronutrient availability, and normal circulation to the distal fingers. The skin and nail unit require coordinated support from vitamin C, vitamin A precursors, vitamin E compounds, vitamin B vitamins, zinc, iron, copper, magnesium, selenium, potassium, sulfur-containing amino acids, and protein-building amino acids. Vitamin C is involved in collagen biosynthesis and antioxidant recycling. Zinc contributes to epithelial repair, keratin structure, and normal skin integrity. Copper supports enzymes involved in connective tissue cross-linking and antioxidant defense. Iron supports oxygen transport and cellular energy metabolism. Magnesium and potassium help maintain electrolyte balance, hydration patterns, and normal cellular function. Plant foods provide these nutrients together with flavonoids, carotenoids, phenolic acids, lignans, and other compounds that support oxidative balance and epidermal barrier biology. A whole food plant-based dietary pattern centered on hydrating fruits, mineral-rich greens, legumes, whole grains, seeds, nuts, and colorful vegetables may help support the biological systems that maintain cuticle flexibility. Orange, strawberry, kiwi, spinach, sweet-potato-orange, pumpkin-seeds-dried, sunflower-seeds-dried, brown-lentils, oats-cooked, chia-seeds-whole-dried, cucumber, and almond-raw provide water, fiber, potassium, magnesium, zinc, vitamin C, carotenoids, vitamin E compounds, plant protein, and amino acid building blocks. These foods also provide phytochemicals such as quercetin, beta-carotene, lutein, zeaxanthin, catechin, chlorogenic-acid, ferulic-acid, and lignan-associated compounds that support antioxidant response pathways and normal inflammatory balance. Brittle cuticles are not a single disease pattern but a visible sign of local barrier stress and nutrient-demand mismatch. Cuticle tissue is especially vulnerable because the fingers are repeatedly exposed to water, detergents, friction, dry air, and environmental irritants. Supporting hydration, potassium-rich whole foods, vitamin C-rich fruit, zinc-rich seeds, magnesium-rich greens, and fiber-rich legumes may help maintain the internal nutrient environment needed for healthy nail-fold tissue, collagen support, epidermal repair, and flexible cuticle structure.