They’re often described as “unruly,” “temperamental” or “unpredictable.” But the truth is curls follow a logic all their own.

Morningstar Quantitative Ratings for Stocks are generated using an algorithm that compares companies that are not under analyst coverage to peer companies that do receive analyst-driven ratings.

Heat, humidity, and oil have no friends here.

Whether you've got fine curls that frizz up, dry out, get greasy fast, or fall flat — or you're working with coily 4B/4C hair that battles breakage, shrinkage, and moisture loss — you've probably ...