You may request a light facial (water based) cleanser to remove any make-up prior to the session. http://Akiramiyanaga.com/news/2014/01/20/exhibition-mot%e3%82%a2%e3%83%8b%e3%83%a5%e3%82%a2%e3%83%ab2014-%e3%83%95%e3%83%a9%e3%82%b0%e3%83%a1%e3%83%b3%e3%83%88%e6%9c%aa%e5%ae%8c%e3%81%ae%e3%81%af%e3%81%98%e3%81%be%e3%82%8a-mot/