The MediBeaute Astaxanthin Double Acting Essence provides a fast-acting anti-aging effect by Astaxanthin and Decarboxy Carnosine. Dr. Marie Watanabe has found that the precise combination of these two elements has been proven to reverse any environmental stressors and damage to your skin. Consistent using of these two can greatly reverse the damage caused by the environment and everyday habits; giving your skin a youthful glow with collagen and hyaluronic acid boost! Why is MediBeaute Astaxanthin Double Acting Essence one of our customer's favorite: OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.