text:  Yes, they have. A lot of the guys on my job, you know, say, hey, you look really nice today. What have you done? It's like nothing different, you know, but it's like a glow of some sort. Collagen is the main protein in our skin, too. So many times people find that they get more of an uplifting effect with their face. Even though they're losing weight, their face is more uplift and taut.