Principal Secret is a popular skincare brand known for its focus on anti-aging products. Founded by Dr. Dennis Gross, a dermatologist, the brand aims to provide effective solutions for various skin concerns, including wrinkles, fine lines, and uneven skin tone. The product line includes serums, creams, and treatments that often feature ingredients like retinol, vitamin C, and hyaluronic acid. These ingredients are chosen for their proven benefits in promoting healthier, more youthful-looking skin. The brand emphasizes a science-based approach to skincare, making it accessible for everyday use.