I had a facial where they used SkinMedica products. The day after my facial I woke up with red and slightly swollen eyes, by the next morning I had red blotches on my face and very swollen eyes. The facial I had was called the diamond glow, the spa was convinced that I had an allergy to the tool (nickel) they used and not the products. After taking a steroid to heal my skin I decided to get back to my new skin products. I started with TNS Serum in the morning and by the evening my face started to itch, I had extra wrinkles under my eyes and they were swollen. So I guess my first allergic reaction wasn't the tool and was this product instead! And like some other reviews I have never been allergic to anything before product so I have no idea what is in this "safe" product.