Question: are acrylic cups dishwasher safe?
Answer: Acrylic plastic glasses and drinkware are NOT dishwasher-safe. ... Hand washing is the only way to clean acrylic products; again, dishwasher rinse agents and heat will cause quickly cause acrylic glasses to crack and craze (develop hairline cracks). Microwave: Acrylic plastic glassware is not recommended for microwave use.