This New French Spa Treatment Made My Skin Look (and Feel) as Smooth as Glass

I should start off by saying that I'm a bit of spa fanatic—whether it's a manicure, massage, or facial, you can count me in. In fact, I've probably already booked my appointment. So while I will enthusiastically jump at the chance to try any and all new spa treatments, that doesn't mean I can't judge the great from the good and the good from the bad. In fact, I pride myself on being honest with myself—even a tad cynical—when it comes to new spa services. I mentally prepare myself, I'd imagine, in the same way a food critic does before eating at a five-star restaurant.

"Don't be fooled by showmanship or pizzazz," I tell myself. "No matter how Instagram-worthy the amenities are or how heavenly the fluffy robe feels, don't let that influence your opinion of the actual treatment." While those things do in fact matter (after all, they contribute to the overall experience), I don't think they should count for everything, because at the end of the day, it should really be about how you look and feel.

That was my exact mindset before walking into the spa at The Peninsula Beverly Hills—a hotel in Los Angeles so beautiful IRL that I lapsed into a momentary panic upon my arrival, wondering if I had accidentally stumbled onto a movie set. But I digress. I was there to experience a new beauty treatment designed with the French skincare brand KOS Paris. It's called the Body Tonic, and it's 90 minutes of relaxing, skin-nourishing goodness.