Is this for licensed cosmetologist only?

I thought it was. :( I need help! Is anyone a cosmetologist? I have been doing my hair well I attempted it anyway and I'm a natural blonde and long story short it turned brassy and I need to know the correct way to tone, and it's 1:2, but u wanna try the ion bright whites or the ion developer sensitive scalp bc I used saloncare with the loreal quick blue , but I have the Wella T18 and ik pretty much just trying to color correct it now and fix it. I want a light blonde platinum, but with a hint or silver or ash. :) How long should you leave it on? Leaving it on not long enough (give me example please, accurate times..... Like if I only leave it on 15 or 20 mins what does it so? And if I leave it on 45 min to hour does it make it more brassy and orange?) How to prevent brassy times the most and oohhh the additive 050 Violet fresco or whatever I know u mix it with ion color brilliance hair color a drop or two ..... But can you use with beach or lightener? Btw I got the bright white light

Yes. Although you can also shop there if you are a cosmetology, nail tech or barber student. Bring your school contract with you and they'll get you set up with an account for the duration of your school contract.