From some recent medical papers:
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CONCLUSION: IPL may induce activation of dormant hair follicles in untreated areas close to hirsute-treated areas.
http://www.ncbi.nlm.nih.gov:80/entrez/query.fcgi?cmd=Retrieve&db=PubMe d&list_uids=12460295&dopt=Abstract
</font><hr /></blockquote><font size=“2” face=“Verdana, Helvetica, sans-serif”>Another report of the same phenomenon:
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CONCLUSION: Even though common, most side-effects secondary to IPL photodepilation are mild and transient. Permanent side-effects such as scars are unlikely but they may occur. Growth of new, fine and dark hair may be seen in untreated areas in close proximity to the treatment area, especially in the neck, a side-effect that is reported for the first time in the literature.
http://www.ncbi.nlm.nih.gov:80/entrez/query.fcgi?cmd=Retrieve&db=PubMe d&list_uids=12472492&dopt=Abstract
</font><hr /></blockquote><font size=“2” face=“Verdana, Helvetica, sans-serif”>Article on hair whitening after IPL
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CONCLUSION: Temporary or permanent leukotrichia may develop following IPL and laser hair removal therapy. This finding may be explained by the difference in the thermal relaxation times of melanocytes and germinative cells. The light absorbed and the heat produced by melanin may be sufficient enough to destroy or impair the function of melanocytes but insufficient to damage the hair follicle cells.
http://www.ncbi.nlm.nih.gov:80/entrez/query.fcgi?cmd=Retrieve&db=PubMe d&list_uids=12135507&dopt=Abstract </font><hr /></blockquote><font size=“2” face=“Verdana, Helvetica, sans-serif”>
[ April 19, 2003, 05:26 PM: Message edited by: Andrea ]