Sunscreen should always be your first line of defense against skin cancer, sun spots and wrinkles! Dermatologist Dr. Elizabeth Hale explains how you can get the most out of your SPF.

Watch more 30 Days of Beauty tips. 


Want to know how to look marvelous without splurging so much? Dr. Oz invites three beauty experts to share the smartest ways to save money while looking fabulous starting from your hair and makeup tools to the beauty products you use.