Recommendations for DD's dry scalp please

[flossyfloo]

Doing my DD's (6y) hair this morning and noticed her scalp is quite dry and flaky. We went swimming a lot last week as on holiday so think this may have something to do with it. I always use Boots sun and swim shampoo and conditioner when she swims to protect her hair but I've never seen her scalp this dry before.
Any recommendations of something I can use to help?
TIA

I would use olive oil overnight, and use a milder baby shampoo to wash it out in the mornings. Hope that helps!