I've read that hair follicles can convert T4 to T3 directly.
Would a topical application of desiccated thyroid to the scalp help rejuvenate thinning hair, or could that mess up thyroid levels elsewhere in the body?
(I think Ray said it has to be ingested to be effective).
Would a topical application of desiccated thyroid to the scalp help rejuvenate thinning hair, or could that mess up thyroid levels elsewhere in the body?
(I think Ray said it has to be ingested to be effective).