I'm not sure how necessary a corrector would be for everyone, depending on your area of concern - obviously sales people are usually advised to upsell wherever there's scope for it. I'm in my mid 60s, struggle with poor sleep, very fair quite translucent skin so I have this thing going on where directly underneath my eye is very pale then along the lower orbital bone there's deep bluey black shadow - it's that blueness which particularly benefited from being neutralised with the peach corrector. For generalised redness/uneven skin tone around the nose/"muzzle" area it wasn't needed.