Collagen vs Glutathione: Which is Better for Skin Whitening & Wellness? Collagen vs Glutathione which one should YOU choose? , Lets decode it in under 30 seconds , Collagen = The Builder, Strengthens your skins structure, smooths fine lines, and boosts Glutathione vs Collagen: Which is Best for Skin Glow If your collagen isn't doing anything it might just be underdosed. The difference isn't in taking collagen, it's in taking enough. 2 scoops = the kind of doses of collagen, glutathione, HA