If you have a bad credit history you'll find it extremely difficult to get a loan unless you have a property you can offer as collateral. IF by some miracle you do get offered one, then be prepared for a huge % APR and high repayments that will make it hard.
Personally I'd save and steer clear of getting into debt before you start
If you haven't got a business plan, you could approach the Princes Trust (depending on your age!) who will help you do this (they can also open the doors to Angel investment but you can also do this yourself)
Are you already trained in make-up/ beauty and want a loan to start a business? or are you wanting a loan to train in make-up / beauty and then go on to start a business?
I don't think either is a good idea. As you will see on these forums it can take 1- 2 years to get a business profitable and be able to start paying yourself a wage, so managing loan payments may well be impossible.
If it's training you need, a business loan wouldn't be right but you may be able to get some sort of student / training lone.
I trained in beauty 10 years ago just fed up of shit pay working all the hours under the sun!
I have about 30 clients waiting for brows lol so hopefully fingers crossed it all kicks off. My partner is a tattoo artist so il be in his studio a couple days a week doing a clinic day there. So naturally with tattoos and spmu it all goes hand in hand.