Acid is a psychedelic aesthetic rooted in 1960s LSD counterculture and its swirling, kaleidoscopic art, where perception itself turns distorted and vivid. San Francisco's Haight-Ashbury scene produced it, along with poster artists like Wes Wilson and Victor Moscoso working for the Grateful Dead and Jefferson Airplane. Color and movement saturate everything. Tie-dye appears in every colorway, alongside liquid-swirl and paisley prints. Wide bell-bottoms and satin poet blouses carry the silhouette. Round tinted eyewear in yellow or orange and layered bohemian accessories finish it.