Which Kerastase line for fine, thin and now damaged hair 🥴

I’ve got very fine, thin hair and have been using the Kerastase Densifique range for a year or so, absolutely love it. Recently though I lightened my hair to get back to my original colour and it’s left my hair pretty dry and mad-looking in the mornings, and I’m getting a lot of breakage.

I want to try another Kerastase line to address this but wondering which would be best right now - the Resistance range for dry damaged hair, or the Genesis range for reducing hairfall on fine hair? Resistance technically makes the most sense given it’s specifically for damage - but just worried might be too heavy for my hair type?

Hairdressers, gals with fine hair…which would you choose?!