Is it bad to use a rare candy?

[Owlman]

Like will I get the stats to increase later?

[summnor1201]

Rare candys just raise the level so nope there not bad

[MetalMario]

http://www.serebii.net/pokedex-rs/ev.shtml

[shiny manafi]

Rare candies just lvl up the lvl but doesn't increase stat

[Alphonse]

I think its bad because even though you can rank up faster they make your pokemon weaker.