I used the Defense shampoo for Normal to Fine Non colored treated hair (I don't dye my hair)This is the Conditioner:
https://uk.strawberrynet.com/haircare/bosley/professional-strength-bos-defense/145494/
It looks like they are out of stock for the shampoo.
If you dye your hair you can use the orange coded one:
https://uk.strawberrynet.com/haircare/bosley/professional-strength-bos-defense/145487/
I haven't tried the treatments, as didn't find the need to.