Formulated to address signs of ageing, the Kiehl’s Retinol Skin-Renewing Daily Micro-Dose Serum is a hardworking treatment for mature skin types.In a daily-strength micro-dose, the serum releases a surge of pure retinol to help visibly soften the look of wrinkles. It also seeks to refine texture and firm the skin’s appearance, taking care to resist typical signs of discomfort associated with retinol use.Infused with peptides and ceramides, the formula works to support cell turnover while strengthening barrier function. This product is suitable for first-time retinol users, helping to promote smooth, youthful-looking skin.