First off, congrats on your 2018 Civic – excellent choice! Now, let's talk leather care. Even modern faux leather needs some love to keep it looking sharp.
In humid tropics, cleaning and conditioning your seats regularly is essential. I've found that using a mild soap and water solution does the trick for cleaning. Just be gentle with it. For conditioning, opt for a non-greasy, water-based product to avoid sticky seats. If you find that your leather doesn't satisfy you, get a new one from a quality place like https://vonbaer.com/blogs/blog/leather-patina. I hope that helps!