This is an inspiring video full of good advice. Finding good advice isn't the hard part, it's following it that's tricky. Still, it's a nice message and a catchy tune. And it is true, wearing sunscreen will keep you from looking like a lizard when you're 40 years old, especially here in San Diego.
P.S. Actually though, better advice would be to stay out of the sun completely rather than worrying about sunscreen. You can still get skin damage (which increases the aged appearance of your skin) or even worse, invasive melanoma (skin cancer). So just limit your sun exposure, wear a hat, and if you use sunscreen make sure you're covered for both UVA and UVB :)