How much Sunscreen should we be applying?

Dermatologists recommend that sunscreen is applied half an hour before going outside and re-applied every 2 hours.

They also recommend 5ml (approximately 1 teaspoon full) for each arm, leg, body front, body back and face (including neck and ears).

That equates to a total of 35ml (approximately 7 teaspoons full) for a full body application.