Rock chose to launch a mineral sunscreen — the Skingredients Skin Shield SPF 50 PA+++ (£46) — not because she doesn't like chemical sunscreen (she emphatically does), but to ensure it would work with as many skin types as possible. "Because this brand is created first and foremost within an Irish market — we're quite a sensitised nation, and so chemical SPF can at times, not always, cause irritation. So the safest way to do this was to create a mineral," she explained.