You should apply your Riemann P20 sunscreen liberally around 15 minutes before you’re planning to go out into the sun.
Massage the lotion or spray into your skin, making sure that vulnerable areas like your shoulders and feet are covered properly.
To protect your face, spray or pour a small amount of P20 into your hands and rub it onto your face, making sure it’s well covered, don’t spray this product directly onto your face.
Reapply after you’ve been swimming, after towel drying your skin, or if you’ve been sweating a lot.