@knitfroggy, is that the Nivea in the yellow tube?
I find that most anything that’s marketed as “chapstick”, even the cheapy Bonne Bell stuff, works fine, if you use it consistently.
(While I had super super chapped lips on Accutane, I found that the Carmex (the cherry flavor! lurve for @knitfroggy) squeezy tube or the Bonne Bell big tubes (link) worked the best out of everything—Aquaphor, aka. vaseline, is too gloppy for normal, day-to-day usage.)
Also, although @teh_kvlt_liberal is probably being snarky, he’s right: drinking water/staying hydrated will help prevent chapped lips in the first place.
(If it’s something that’s popped up recently, it might be a reaction to a new product—new chapstick, new toothpaste, new food, etc.)
ETA: Found the big Lip Smackers, even if not in the flavor I have and lurve (Tropical Punch).