148. Rach's Hearty Chicken Soup Features A Good-For-You Grain + Self-Tanning Secrets for Summer!

At home teeth whitening that actually works? Our viewers are trying out products with big claims in today's "Human Lab" show. Gretta Monahan is breaking down self-tanners to help you get a summer tan while avoiding UV rays. Two of our favorite foodies, YouTuber Daym Drops and 12-year-old food critic Luca are trying out a meal you have to see to believe, while Rach is making a healthy and hearty chicken soup.