Low hair porosity is when the hair cuticles are tightly shut. Low porosity hair cuticles are very tightly closed and don't absorb water or product easily. High porosity hair cuticles are very open and absorb water and product easily. The pure oil itself may also be used on skin, hair, or cuticles. Plants here have leaves with moisture-tolerant characteristics, such as drip tips and waxy cuticles. The preserved cuticles are also aligned in a unidirectional manner, which decreases tangling and matting. They tend to have thin cuticles and become desiccated if exposed to the air. The exoskeleton or cuticles consists of chitin, a polymer of glucosamine. Due to their soft cuticles, termites do not inhabit cool or cold habitats. The cuticles may be prone to infections. In fact, spiders and other arthropods have modified their cuticles into elaborate arrays of sensors. In fact, arthropods have modified their cuticles into elaborate arrays of sensors. The cuticles of plants function as permeability barriers for water and water-soluble materials. Scorpions also fluorescent due to the presence of beta carboline in their cuticles. "Conocybe" species have cap cuticles resembling cobblestones.