Methylcobalamin vs Cyanocobalamin: Which B12 Actually Prevents Gray Hair
Most people taking B12 for gray hair are using the wrong form entirely - 40% of us can't efficiently convert synthetic cyanocobalamin into the methylcobalamin our cells actually need. This research-backed guide reveals which B12 form actually prevents gray hair, plus the exact testing protocols and dosages that achieve 60-70% success rates.
