Inspiring songwriters, painters, and poets, the beautiful shades of twilight are also the inspiration behind Twilight Hypercolor Thinking Putty®. Twilight is the time of day when the sun sets into dusk. As the sun dips below the horizon, its rays refract and scatter against the atmosphere to shine a bright blue one last time. This putty starts out that same deep purple and turns an almost fluorescent blue to mirror the last flash of evening light. Never dries out! Made in the USA. Contains 3.2oz. of putty. For ages 3 and up. WARNING: CHOKING HAZARD - Small Parts. Not for children under 3yrs.