I was using art naturals hair regrowth shampoo at first ArtNaturals Argan Hair Growth Shampoo - (16 Fl Oz / 473ml) - Sulfate Free - Treatment for Hair Loss, Thinning & Regrowth - Men & Women - Infused with Biotin, Argan Oil, Keratin, Caffeine https://www.amazon.com/dp/B01GP6MGD6/ref=cm_sw_r_cp_api_i_iTOcFb5T1DVTD but I’m not sure why it’s not available on Amazon :(

I’m currently using pure biology hair growth shampoo which seems to be working too Hair Growth Stimulating Shampoo... https://www.amazon.com/dp/B075YMZDGT?ref=ppx_pop_mob_ap_share

When researching the shampoo I read up on some of these articles that explain what ingredients help with hair regrowth. https://www.elle.com/beauty/g14432639/hair-growth-loss-shampoo/