Looking to make a level 7 out of level 6 and level 9. What are my ratios?

[celestial]

Looking to make a level 7 out of level 9 and level 6. What are my ratios?

 

[dyehardstylist]

You'll need about 1 part level 6 mixed with 2 parts level 9 to achieve level 7, but keep in mind that the exact outcome may vary based on the brand and developer.