For an even more long-lasting plump, when you use a product containing Maxi-Lip at least three times a day for 28 days, studies show your lips will become plumper longer term because it stimulates collagen growth. Obviously, if you completely stop using it after that, they will gradually go back to their normal size because it doesn’t change your DNA, and that’s what tells your body how plump your lips should normally be. But if you stop using fillers, your lips would eventually go back to their normal size anyway, so in my view the plumping lip glosses are preferable because they’re cheaper and you’re in control of them.