It works by blocking the androgen receptors. It's estimated that 1MG blocks 4 ng/dL of testosterone, which means 50MG would block 200 ng/dL of testosterone. Since bicalutamide has an elimination half-life of around seven days, it will build up to 350MG in your body which will block around 1400 ng/dL of testosterone. It continues to build up each time you take it, and reaches 90% of its maximum effectiveness after four weeks. Although, it does increase T initially, that doesn't matter because it gets blocked by a landslide. It stops hair loss because testosterone can no longer have an effect on you since the androgen receptors are blocked. At 25MG/day, gynecomastia happens to around 25% of users. At 50MG/day, it happens to around 50% of users. Although, both doses are greatly effective.
So far it's going great. My sebum production is basically non-existent at this point, and I no longer have to wash my hair every other day and can get away with washing it on every fourth day. I feel a lot better too, since spironolactone was making me very tired and nauseous.