Advice on topical finasteride and also your experiences regarding it.

First of all, is the topical finasteride from derma.pk legit? At 0.1% or 0.25? Those who have used it, what side effects did you experience? And how bad was the shedding, if any? Please answer. I am not asking for medical advice, rather just you sharing your experiences of it, and the company derma.pk.