Which products that I should use in a very porous curly hair, that hasn't been cut for 6 months?

I'm from Brazil and I'm currently living in UK. My hair has changed a lot during this time: it is completely dry, it's very porous and it is opaque. I used to apply lots of keratin products, but I wasn't able to find one here. I just use creams from Umberto Giannini, but I'm not quite sure of which brands and products would be the best match for my hair.