Change in Hair Character on Finasteride, Why?

I am a 22-year-old male. I started Finasteride 4 months ago and recently noticed that most of my hair became wavy whereas they have always been straight. Is this normal with Finasteride?

I have seen a return to normal hair characteristics when Finasteride works on miniaturized hairs that are involved in the hair loss process.  Did you have early hair loss there where Finasteride may have reversed it?