So, what did I like about this serum? -This serum is clinically proven to stimulate collagen production. -My skin tone and texture seem more tones, even tighter since using this product for three weeks, applying it in the morning and at night. -A little goes a long way. -My skin dark circles are less prominent under my eyes. -My skin appears more hydrated. -This Vitamin C Serum is helping to treat my pcos acne, helping to prevent breakouts and hyperpigmentation. -I also like that these products are made in the USA, with 98% Natural and 72% organic ingredients. I also like that this serum is responsibly made- free of alcohol, parabens and sulfates.