2006 New York Code - License Required.

 
    § 401. License required.  1. No person shall engage in the practice of
  nail  specialty, waxing, natural hair styling, esthetics or cosmetology,
  as defined in section four  hundred  of  this  article,  without  having
  received  a  license to engage in such practice in the manner prescribed
  in this article.
    2. No person  shall  own,  control  or  operate,  whether  as  a  sole
  proprietor,  partner,  shareholder,  officer,  independent contractor or
  other person, an appearance enhancement business without having received
  a license for such business in the manner provided in this article.
    3. A person licensed by any other state or country  to  practice  nail
  specialty,  waxing, natural hair styling, esthetics or cosmetology shall
  be allowed to practice in New York state for three months or less within
  any calendar year for the purpose  of  giving  to,  or  receiving  from,
  persons  who are licensed under this article training in current styles,
  techniques or materials,  provided  however,  that  no  such  unlicensed
  person  may  provide  services  to  the  public  for  any  fee, or other
  compensation, whether direct or indirect.