So if you've read the map update you'll know there's 3 hari Cares strewn about the region. Each of them has a specific thing they're known for.
The 2 in Recedentia and Penna will call anda when the pokemon anda have in wants to try to learn a new pindah and let anda choose if they do and what pindah gets replaced.
The biggest 1 is in Penna and run oleh ace trainers who battle anda 1st to make sure you're not the type to just leave pokemon there and forget about them. Pokemon learn strong moves sooner in this one, and reach their full potential quicker. Sometimes stats will get boosted further then normal here, because of constant training.
The 2nd main 1 happens to be run oleh the gym leader at Recedentia and lets anda continue to interact and play with your pokemon while they're there, along with giving anda an excuse to have a rematch if anda want. Also, because it's the Evolution Gym that doubles as the hari care, pokemon can evolve quicker here. And because anda can still play with them obviously their happiness can still go up. Playing with your pokemon is encouraged, as Suzzana believes being friends with your pokemon should always come 1st.
And the smaller 1 in Khered specializes in baby pokemon. This 1 is lebih like all the others in the other regions, except baby pokemon level up quicker and sometimes when anda take them back they'll be holding berries. This one is also the best one for breeding.