Transform your skin with Retinol Expert 0.1% 30ml! This specially formulated serum contains a powerful dose of retinol, known for its anti-aging properties. Say goodbye to fine lines, wrinkles, and uneven skin texture. Experience visibly smoother, firmer, and more youthful skin. Get yours today and love your skin! Anti-aging anti-wrinkle serum with high-content retinol that clearly improves wrinkles. Keeping the effect until the last drop The effect is maintained until the very last drop of this product through a three-stage oxygen barrier system that prevents oxidation of retinol by light and air. Definite wrinkle care effect shown in just two weeks This product offers a definite wrinkle-care effect in the three major anti-aging categories (wrinkle, firmness, density) in just two weeks. How to use During skin care in the evening, after using Skin→Lotion→Essence/Serum, apply an appropriate amount, focusing on aging-prone areas such as wrinkles. Finish with cream. Be sure to use sunscreen when going out. Use every other day for 2 weeks, then daily after 2 weeks.