I had a HT procedure done 5 months ago. It went successfully. I addition, around the time of my HT, I decided to begin using propecia and Minoxidil. It has been a great success. My new hairline has been lowered by about 1/2 to 3/4 inch below the the hairline established by the HT.

While I am extremely happy with the result. I want to tackle another problem, gray hair especially near the temples. I want to try either Grecian Formula or Youthair which contains some lead based compounds such as lead acetate. Is it safe to use these product with propecia and minoxidil?

I am not familiar with the Grecian Formula or Youthair that you mention. From a medical perspective, I would be cautions of lead based products. Lead is a poison. And while I hope you are not ingesting these products, the application on skin/scalp can still have a systemic effect as it is absorbed through your skin. See Lead Based Hair Products: Too Hazardous for Household Use - Results.

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