He had some new additions to the evening canon with dinner jackets in silvery nylon, knitwear-inspired geometric patterns and acid-treated cotton that might be mistaken for old velvet.

WSJ: Deconstructing the Tux

Acid-treated lignin emits sulfur dioxide when burned.

FORBES: Ethanol

Mild acne can be treated with over-the-counter remedies such as salicylic acid or benzoyl peroxide.

CNN: How can I get rid of my acne?