Cosmetic Talc-Related Pulmonary Granulomatosis.

Inhaling cosmetic talc powder can cause lung inflammation and nodules (rare but documented). This case study tracked a 64-year-old man whose lung damage improved after he stopped using talc products—without needing steroids. While fewer than 10 adult cases have been reported, the risk is real enough to matter if you use talc regularly or inhale it during application.