I can't say I notice a huge difference when I wear this. It makes my lips slightly more moisturized, but otherwise I wouldn't say it was very effective. I wouldn't buy again.
This is my favorite product from Mac . I also love there lipsticks . But the primer helps my lipstick stay on longer . Plus I also feel it works great in the colder months from keeping my lips from chapping . Will buy again .
Prep + Prime has helped with my dry lips, and I have noticed even after it wears off, my lips aren't as chapped as they usually are. It also diminishes feathering I get at my upper lip line.