在这部BBC 地平线：头发护理的秘密片中,
Annually, an estimated US$34 billion is spent on shampoos and conditioners globally - big business indeed. So it comes as no surprise that major cosmetics companies invest heavily in this industry as they want as large a slice of the hair care pie as possible. Along with that investment come some impressive claims about what is in that little bottle. Physicist Helen Czerski and a team of experts will demystify the world of hair and reveal the science behind the claims and bust some of the beauty myths consumers are led to believe, and sort the pseudoscience from the true science in this world of secret research.
