What is the background of the recent explosion of Wuhei ointment?

This kind of cake is also recorded in the synopsis of the golden chamber by Zhang Zhongjing, a medical sage. The book says, "Cooking it with linen and other five blacks can make people's hair black." Five black cakes have been used for thousands of years and have always been regarded as court cakes.

Extended data:

Sourdrang queen lost his hair and white hair in his later years, so he ordered the chef to make this cake recipe and eat it every day. Although he is 70 years old, his hair is still black, supple and full of luster, and he has devoted himself to health care for 20 years. He followed the ancient recipe of a thousand-year-old palace cake, and made this cake with black sesame, black wolfberry and black mulberry without adding a trace of flour, which can promote hair growth and tonify kidney, nourish yin and tonify deficiency, and improve insomnia. Not only the ingredients are scientifically matched, but also the industrial frying is abandoned. The traditional ancient cooking method is adopted, steamed for nine times, and the mulberry fire is slowly cooked, and finally the "five-black sesame cake" is made. The taste is soft and dense, full of sesame aroma, and the boutique is chewy. The more you chew, the more fragrant it is. You ate a piece and still want to eat it! 0 additive, 0 preservative, 0 essence, 0 pigment! And there is no flour, no thickener, real natural raw materials, and babies and pregnant women can eat them at home! Five times the "black health" ingredients, eat it in one bite. Nourishing yin and tonifying kidney from the inside out, black hair will shine, bid farewell to insomnia, waist and knee pain, and restore vitality.