Been using laser for 4 months. Seems to be working for me, I have slight regrowth as confirmed by derm.
Similarly a relative has had positive results (how i came to know about it)
I use zix in addition to lllt, and I think using it in conjunction with a DHT blocker will have best results.
If you do LLLT , use the large clinical machines at a clinic, not lazer hats etc - as others have written, they are not powerful enough