What it is: An improved serum with Immortelle Super Extract, a naturally-derived alternative to retinol that is gentle on your skin. What it does: Through eco-friendly extraction technology and years of research, L'Occitane was able to harness the powers of the untapped anti-aging molecules found in the super flower Immortelle, creating Immortelle Super Extract. The powerful, concentrated serum absorbs quickly for natural, younger-looking skin.