Triterpene alcohols comprise a broad class of pentacyclic and tetracyclic natural products biosynthesized from squalene, commonly occurring in plant cuticles, resins, and oils including those from spices and herbs. Representative members such as alpha- and beta-amyrin, lupeol, and betulin exhibit anti-inflammatory, antimicrobial, and antioxidant activities. They contribute to the unsaponifiable fraction of vegetable oils and waxes, influencing stability and minor flavor notes. Due to structural diversity, physical constants vary widely; most are lipophilic solids at room temperature with negligible vapor pressure.