ABSTRACT
In this chapter, the fundaments of the aesthetic applications of low-
level light therapy (LLLT) for hair growth, hair loss avoidance, and
prevention and treatment of hair diseases will be presented. At the
beginning, the physiology of hair growth and the corresponding
phases (anagen, catagen, and telogen) will be discussed. Moreover,
the main triggers of hair loss (such as aging and chemotherapy)
will be discussed, and a brief explanation of the current treatment
resources, emphasizing LLLT and its main advantages, will be given.
From this point, the historical aspects of LLLT application will be
listed, and in vivo studies and clinical trials will be presented. The proposed mechanisms of LLLT for hair regrowth and hair loss will
be presented, along with phototherapy devices for hair loss. The
chapter will be ended with the future perspectives of the aesthetic
applications for hair research.
