What water saving thick skin of a cactus is a characteristic?

The thick skin of a cactus, often referred to as a waxy cuticle, serves as a crucial adaptation for water conservation. This protective layer reduces water loss by minimizing evaporation, allowing the cactus to thrive in arid environments. Additionally, the thick skin helps shield the plant from extreme temperatures and harsh sunlight. Overall, this characteristic enables cacti to efficiently retain moisture in their often dry habitats.