THE SERUMS KIT. Benefits: Daily Vitamin C Serum: Formulated with a highly stable form of vitamin C, this is a powerful, brightening serum that helps target dark spots and improve the signs of aging and photodamage.. Nightly Retinol Serum: A highly effective serum with Retinol Lineolate, which helps smooth the appearance of fine lines, wrinkles, and uneven texture without irritation or downtime.. Formulated Without: Made simply and without compromise, their skincare formulas are non-GMO and organic whenever possible, and always formulated without silicones, colorants, sulfates, phthalates, parabens, PEGs, petrolatum, mineral oil, and nanoparticles.. Includes: Daily Vitamin C Serum. Nightly Retinol Serum.