🎯 At a Glance
🔬 How It Actually Works
A chemical compound used in "progressive" hair dyes (like Grecian Formula) to slowly darken grey hair over time. Lead is a notorious neurotoxin that accumulates in the body and brain. It has been banned as a color additive by the FDA.
💖 Why your skin loves it
Darkens grey hair.
⚖️ Myth vs. Fact
The Myth
It doesn't absorb through the scalp.
The Science
Trace amounts can absorb, and the residue left on hands poses a massive ingestion risk.