Regarding PABA, I have been taking 500 mg/day for years, and it hasn't done anything at all for restoring my hair color or even for freezing further change. A much higher dose of it can be risky and it's not worth the gamble.

I have also been taking B5 as both calcium pantothenate at 500 mg/day and also as pantethine at 300 mg/day for years, neither of which has done anything either in this context.

Similarly, B12 hasn't visibly helped either.

I suspect that copper is the issue with me.

The lowest dose of MitoQ, a 5 mg capsule per day, had lowered my blood pressure significantly after a month of use, well below normal, approaching an unsafe low. Moreover, it took another month after discontinuation of MitoQ for the blood pressure to normalize. I shudder to think how much more powerful SkQ1 would be if taken orally. My first impression is that SkQ1 seems more relevant for local use than for systemic use.

> I suspect that copper is the issue with me.

Prolonged copper deficiency can cause irreversible neuropathies and CNS damage. You should try to get tested for it if you can.

Thanks for your account of these supplements. I thought PABA looked interesting until reading this.

Hopefully some day we can have an over the counter drug that restores or slows graying. I don't have issues with mine beyond it being patchy, distracting.

seems like unnecessary dangerous experimentation with the hopes of something cosmetic. why not just color hair?