Healthy skin contains large amounts of vitamin C, especially in the epidermis, or outer layer of skin ( Vitamin C keeps skin healthy by protecting it from oxidative damage caused by the sun and exposure to pollutants like cigarette smoke or the ozone ( It also promotes collagen production, which keeps skin looking plump and youthful ( High intakes of vitamin C are associated with better skin quality, while lower intakes are associated with a 10% increased risk of developing dry, wrinkled skin ( While dry, damaged skin can be linked to vitamin C deficiency, it can also be caused by many other factors, so this symptom alone is not enough to diagnose a deficiency
Your stomach acid and digestive enzymes aren't exactly rolling out the red carpetthey're actually breaking down most of the glutathione before it ever reaches your bloodstream
McMillin M, Galindo C, Pae HY et al
But with so many supplements on the market making the same promises, it's hard to know what's actually worth trying, or why some products work and others don't
No internet math