I need help!ATTN WILLIAM!!

> I am a stylist who wants to get into more coloring.> However, I have a few questions, so bear with me. I> read the article on hair coloring, but, do you use> that formula with all coloring lines?We use> Loreal,Wella and Magjerial blondes. Next, Do you use> 20, 30 or 40 volume? We also use Shades, which I love,> but I just went to a Roy Peters class, and he really> confused me with the European vs American systems.> Sorry this is long but I just have a hard time getting> it all.HELP.To Linda Mc;I know that I will get tarred and feathered and run out of town on a rail for this answer, but, its the best I can do now. 99% of my experience is based upon Redken products,( I am trying to not be commercial) here but it is what I know best. Most hair color is formulated to be used primarily with 20 vol. developer. Use of a higher vol. of developer does not automatically give you much faster or lighter results, unless the 'base' product is designed to be used with it as such. The old rule of thumb is 10 vol for depositing color, and may on some shades of hair lift 1/2 to 1 level, 20 vol for 2 levels of lift and 30 =3 and 4o =4 levels. This is just a very rough est. and was concieved years ago before 'new technologies' were introduced into modern coloring formulations. Always follow mfrs formulations and be very cautious about concocting your own formulations unless you have tried it first on 'cut off hair' for a baseline. Although I have only very limited experience with L'oreal pro products their numbering and level system for displaying the undertones and secondary colors impress me. I have used their deposit only colors a few times with no bad results and think I would follow up with more testing of their product line for sure. Just keep in mind the hair you sweep up from the floor is a very valuable tool if used correctly for strand testing new products. I have even taken long hair that was cut from a customers head and captured it between two small boards and nailed them together and then it looks like a paintbrush and color/perm tested the same 'head' of hair to see what different color combinations or perm rod wraps will produce on the 'same head of hair'. william