The sturgeon roe essence in Dr.Joanna products contains 8 essential amino acids, 9 natural moisturizing factors, multivitamins and abundant protein, which can activate and nourish human cells. During the Tsarist Russia, sturgeon roe essence was exclusively available to the royal palace, and together with foie gras and black truffles, was known as the world's three most luxurious delicacies. Sturgeon caviar is also known as "black gold" or "black pearl of the Caspian Sea" because of its rare production and bright color. After continuous research, it has been found that sturgeon roe essence not only has edible value, but also has obvious skin care value.