I get the glow from inside out by drinking 50-100 OZ of Grace Aloe Drink every day. I am crazy about that stuff. Everytime I go to Walmart, I take every bottle of it off the shelf...sometimes I leave the little ones. Also change your pillowcases often. Even if you wear a bonnet at night, stuff can still "dirty up" your pillowcase...in fact, sleep on your back...fights wrinkles.
For glowing skin maintenance, I make a pure coconut oil and sugar scrub and exfoliate rough spots (knees, elbows, etc.) twice a month. If I dare see the start of a pimple, I dry that bad boy up with Clearisil tinted acne cream. I rarely get pimples though.
And vitamin C...helps stimulate collagen and gives skin a brighter look, not lighter, but brighter.