Actually there's something much better than MSM that was only discovered recently, stabilised keratin.
cynatine HNS, which is manufactured using a patented process that enables the keratin molecule to be absorbed
Only a few supplements have it in though.
Also, forget taking just biotin, take a whole b complex, high quality one, to deal with stress induced hair loss.
For topicals, use triple refined emu oil. A new product was released just last month, that isn't still available in the UK unless you paid massive international postage, that contains proanthocyanidin b2 and copper peptides, the first time they have been put into one product.
it is Anti-Aging Rejuvenating Scalp Serum , it has stem cells in it extracted from trees also. No other product like it on the market, but it still isn't available to get in the UK.
Also, take tocotrienols, they combat baldness and thinning.
Also resveratrol, only a high quality version, can combat baldness directly.
I used to take MSM all the time, it does nothing for most men. That is the cold hard truth.