Can you tell me is head and shoulders okay for people with dry scalp and people with sensitive skin?

It helps to remove: dandruff flakes, but can feel a little dry. Try some avocado oil overnight with shower cap to add moisture back to scalp.

OK: You can use an additional conditioner rinse after. Sometimes people have dandruff and assume the flakes on their shoulders mean dry skin. Then they are delighted to discover that it all gets better with dandruff shampoo. If you instead have dry scalp you may like using a skin cleanser such as dove to wash your scalp in the shower.