You are best off to ask the school you are applying to.
For myself, I didnt need any specific qualifications. I have always achieved my highest grades in art based subjects such as art & design, food technology and textiles which certainly gave me an advantage. I also did a part-time makeup course before going to makeup university which again gave me a step up. But as far as I am aware, you can get into makeup school with no specific qualifications and start fresh.
I hope this helps you and best of luck with your course!