Clinically Proven Advanced Retinol & Antioxidants. Developed in partnership with Dermatologists and Plastic Surgeons, this firming serum stick is designed to lift, tighten and smooth fine lines instantly and over time. Target the face, neck, chest and back of hands with this easy to use, fast-absorbing formula. Powered by Advanced Retinol and Antioxidants to continually boost elasticity and visibly reduce lines for a naturally contoured look. Clinically proven to instantly smooth skin and in 4 weeks, 94% had visibly firmer skin. Proven Results: Instantly: Skin is visibly smoother. In 1 week: 94% had a visible reduction in lines. In 4 weeks: 94% had visibly firmer skin. Dermatologist Tested. Non-Comedogenic. Fragrance-Free. Paraben-Free. Hypoallergenic. RoC is a leading french skincare brand, devoted since 1957, to developing clinically proven products that deliver visible and lasting results. Strong partnerships with dermatologists have contributed to our expertise in understanding skincare and developing formulations, which are highly effective yet suitable for all skin types. RoC, we prove our promises.