The conversation is about using vitamin C and Magnesium L-Threonate for hair growth by reducing DHT binding to dermal papilla cells. The original post about vitamin C's pH levels and sebum control was possibly removed by a moderator.
Botox injections on the scalp may help with hair loss, as one small study showed improvement in 8 out of 10 subjects. Treatments mentioned include Minoxidil, finasteride, and RU58841.