Kids Coloured Spray Disappearing Blue Lotion Our Kids Disappearing Coloured Blue Lotion Spray 200ml is a special water resistant sun lotion that contains a unique blue colour which vanishes when rubbed into the skin. It protects against UVA and UVB rays and is ideal for children’s sensitive skin. Looking for a higher factor? Our Once A Day Sun Protection SPF40 is suitable for kids and only requires one application for all day long protection.