What are the home skin care management methods?

I have darker skin. My skin is naturally dark and tans easily with even minimal exposure to sunlight. I also have a sun allergy, so ever since temperatures started rising, I have been applying sunscreen frequently.

Still, I'm wondering if there are home care methods available for people with darker skin. I feel like I need to use sunscreen actively, but I'm curious about the proper way to apply it. I'm also wondering how long the effect lasts after a single application.