Powered by an advanced blend of clinical-strength retinol and retinal - the closest molecule to prescription retinoids - the Philosophy Ultimate Miracle Worker Lift & Firm Face & Neck Serum helps visibly lift, firm and smooth the appearance of fine lines and wrinkles for a more sculpted, youthful-looking complexion. Dermatologist-developed and fragrance-free, it is suitable for all skin types, including sensitive skin and first-time retinol users.