What is the main concern associated with selenium sulfide in hair products?

The main concern associated with selenium sulfide in hair products primarily revolves around its potential toxicity. Selenium sulfide is an antifungal agent often used in anti-dandruff shampoos due to its ability to reduce flakiness and itching caused by certain scalp conditions. However, when misused or overused, it can have toxic effects, particularly if ingested, causing serious health issues.

It's important to note that while selenium sulfide can effectively treat seborrheic dermatitis and other scalp conditions, it should be used with caution, adhering to recommended usage instructions to avoid potential adverse effects. This concern underscores the need for consumers and professionals to be aware of the ingredients in hair products and their implications for health.