Plants growing in deserts have a thick, waxy chemical, called [[1]], in their epidermal cells that prevent water loss to the maximum.

Plants growing in deserts have a thick, waxy chemical called cuticle in their epidermal cells that helps to prevent water loss to the maximum. The cuticle is a waxy layer that covers the surface of leaves, stems, and other above-ground parts of the plant, and it serves as a barrier against water loss and external stresses such as heat and UV radiation. In desert plants, the cuticle layer is often thicker than in other plants, which helps to reduce water loss through transpiration. Additionally, some desert plants also have specialized structures such as spines, hairs, or small leaves that help to reduce surface area and further limit water loss.