Stimulates the growth of hair papilla |刺激毛乳头生长
hair loss may cause the hair roots and papilla to enter their dormancy
periods, while oils on scalp may deter hair roots to breath and grow
freely. Daily sunlight exposure and the failure of stratum corneum(i.e.
dead cells) to replenish itself may result in baldness. A healthy scalp
appears to be palish. Yellowish scalp are the result of exposure to UV
lights, causing the formation of dead skin on stratum corneum, thus
prohibiting further hair growth.