Recommendations for a good deep conditioner for dry, colored, curly hair?

I have very thick, very curly hair that’s naturally pretty dry (I get split ends all the time and don’t have to wash my hair but every few days), and it’s gotten even dryer since I started dyeing it about two years ago. I read somewhere that a weekly (or so) deep condition was good for curly/dry hair, so I was wondering if there are any professionals/people with personal experience who could recommend a good product, since I don’t know where to start.

If you also have any tips on actually using the conditioner (how often it should be used, how it should be applied, etc) those would also be greatly appreciated! Thanks in advance!