Health and Beauty Serums Olay Retinol 24H Night Serum 40 ml Olay Regenerist Retinol 24 Night Serum penetrates deep into the surface layers of the skin. Our patented formula, with vitamin B3 + retinoid complex, provides visible improvements in fine lines and wrinkles, smoothness, radiance, firming, dark spots and pores. Plus, it moisturises for 24 hours! Retinol 24 Night Face Serum delivers all these benefits with virtually no irritation. This fragrance- and dye-free formula absorbs quickly and penetrates deep into the skin's surface so you wake up every morning with younger, more radiant skin. Use daily for 28 days and see real skin transformation.