Believe schools consider these as 2 separate programs.
High School programs - Almost free for immigrants/citizens, but programs last a long time.
Search yourself @ https://www.inforoutefpt.org/rechProg.aspx
English : Hairdressing/Aesthetics(cosmetic?)
French: Coiffure/ (cosméticienne-conseil?)
There are ~Hair Salons specializing in teaching hairdressing, not sure about cosmetic, shorter programs but charge a lot of $. Google these yourself. I don't know key word to use.
Happy New year!