I’m an esthetician who loves Korean skincare and this product did not disappoint! The 5D hyaluronic technology contains 5 different forms of hyaluronic acid which means there are different delivery systems into the skin to help hydrate and maintain hydration. This past holiday weekend was spent outdoors and my fiancé didn’t reapply sunscreen on his fair skin and of course burned! I applied this product on the areas he was red and in discomfort and he said it was cooling and the next day he was fine! No peeling and redness has gone gown significantly! Will purchase again!