So I must disagree with the majority of replies.
I was trained back in Seattle years ago by an older Japanese lady (or Sensei) who knew her stuff. Nuru is not a rub intended simply for 'arousal' purposes...although it can, and usually does, have this affect...even Wikipedia provides a brief explanation on this. (http://en.wikipedia.org/wiki/Erotic_massage)
However, it is a ancient - and medically studied - Japanese technique that has proven health benefits. These articles only touch the tip of the iceberg on Nuru:
http://fireoption7.blogspace.fr/
http://www.articletrader.com/health/benefits-of-nuru-massage-oil-in-relation-to-good-health.html
http://nuruworld.com/2014/03/14/massage-therapy-oils-2/
Unfortunately, much of the medical research done on Nuru health benefits is in other countries (within Europe and Asia) but have been blocked from viewership here in this country...I have tested this while traveling internationally.
Beginner -not expert- video demo of Nuru: http://numagel.com/nuru-massage-wiki.html
[snip - shilling]
Slainte~
Shay O'Brien