You may not be outside as much as 'BC' (before children) and don't get as much sun. Also, we all 'fade out' as we get older (I'm 51 and pretty 'pasty'! LOL).
Also, be sure to drink plenty of plain (preferrably filtered) water. This helps all kinds of things -- joint mobility, skin texture, weight, digestion, etc, etc. (I need to take a large 'dose of my own medicine', too, as I've not been drinking enough . . . )
Avoid caffeiene and nicotine, too, as any stimulants 'age' a person somewhat.
God bless!