YSL introduces Forever Youth Liberator Foundation, a serum foundation containing a high concentration of Glycanactif, specially formulated to help restore your skin's youthful beauty. After application, skin looks more luminous and feels soft, supple and more moisturised. Skin tone and texture are visibly more even, and radiance is restored. YSL uses the following descriptions in all foundation shade names: B or "BEIGE" is best for neutral undertonesBD or "BEIGE DORÉ" is best for warm undertonesBR or "BEIGE ROSÉ" is best for cool undertones£145 per 100.00ml