TY  - CHAP
M1  - Book, Section
TI  - Laser Treatment of Asian Skin
A1  - Nam Shek, Samantha Yee
A1  - Lee Chan, Henry Hin
A2  - Avram, Marc R.
A2  - Avram, Mathew M.
A2  - Ratner, Désirée
Y1  - 2015
N1  - 
T2  - Procedural Dermatology
AB  - Ethnic  skin  is  often  classified  by  the  Fitzpatrick  Skin  Type  classification  with  a  scale  that  ranges  from  type  I  (ivory  white  skin)  to  type  VI  (dark  brown  skin)  Table  57-1.  Asian  skin  color  is  often  characterized  as  types  III  to  V.  This  reflects  the  person’s  complexion  and  tolerance  to  sunlight,  which  is  determined  by  the  melanin  content  and  melanosome  dispersion.  It  is  well  established  that  there  are  no  racial  differences  in  the  number  of  melanocytes.1  Melanosomes  in  keratinocytes  of  light  skin  as  in  Caucasians  are  distributed  as  membrane-bound  clusters,  whereas  the  melanosomes  in  keratinocytes  of  dark  skin  as  in  African  individuals  tend  to  be  distributed  individually.2  A  study  analyzed  the  melanosomes  extracted  from  the  epidermis  in  subjects  of  different  skin  types  from  various  ethnicities.  Epidermal  melanin  content  is  significantly  greater  in  chronically  photoexposed  skin  than  it  is  in  corresponding  photoprotected  skin  (up  to  twofold).  Analysis  of  melanosome  size  revealed  a  significant  and  progressive  variation  in  size  with  ethnicity:  African  skin  having  the  largest  melanosomes  followed  in  turn  by  Indian,  Mexican,  Chinese,  and  European.3  Skin  pigmentation  is  strongly  influenced  by  both  the  amount  and  composition  of  the  melanin  in  the  epidermis.  Variation  in  melanosome  size  may  also  play  a  significant  role.  
SN  - 
PB  - McGraw-Hill Education
CY  - New York, NY
Y2  - 2024/04/16
UR  - dermatology.mhmedical.com/content.aspx?aid=1175096827
ER  -