Some people especially red heads are naturally pale.
Some say that having a healthy glow helps one look younger.
All this depends on what color skin you have naturally and if you do not over do it.
First of all naturally pale people should not try to get a tan to look fesh.
There are many pale celebrities like Natalie Portman that have a paler complexion and manage to look absolutely fresh and stunning.
For those however that have a skin that is somewhat more olive could get a tan.
It is true that a tan can make someone look younger. However, it must be done carefully in order to not over do it.
Not only does too much tanning makes one look older, it also damages your skin and actually ages you more in the future. In order to avoid this it is recommended to go for a healthy glow complexion rather than aim for a tan.