"Lead on lips can lead to lead toxicity. A lipstick that gives a bright colour to your lips may contain significant amounts of lead. Don't be mislead by the glow, and use chemical-free lipsticks, if you can" -Dr Joshi at farawaysister.com.
Also here is a test that you can do it yourself:
1. Put some lipstick on your hand
2. Use a 24k-14k Gold ring to scratch on the lipstick.
3. If the lipstick color changed to Black color; it means this lipstick has Lead.
Quality for good health should be the major concern when you select your cosmetic products. So Be Smart in selecting your Lipsticks.