Concealer for sensitive teenage skin

[JustACountryMusicGirlInCowboyBoots]

Can anyone recommend a budget concealer for sensitive skin please? She gets dry skin under eyes so it's tricky to find one that does irritate or cake.

If it's to go under the eyes, use a corrector or a brightening undereye cream. Rimmel do a 'wake-up' one. Collection do a dupe of the YSL Touche eclat
If it's for covering spots or blemishes, Boots No 17 or No 7.

Rimmel | Superdrug
Results for "concealer" (boots.com)

I rate Revolution “conceal & define” concealers for the price. Good colour range (a good colour match is crucial) and blendable. Don’t last quite as well as the pricier ones though.

She's used the No7 one before that's the brush applicator one but she can't remember if she reacted to it. I don't think she did because we shared it and she kept coming back to use it every day. She's slightly paler than me but we can use the same concealer shade. We are both prone to purple shadows under our eyes. I can't say my experience of yellow based concealers has helped that despite all advice to the contrary.
The Rimmel one might be a good shout. We are heading into Manchester next week and will have the big boots sms Superdrug to look round.