Have you used a blue shampoo yet? That will help with the brassiness. But if your toning your hair I wouldnt go over 5vol.(this was what a stylist told me once) Best of luck!

I checked my bottle and didn't see an expiration date.It The large bottle lasts a long time as I only color my hair about every 6 weeks and I have not had any issues with it not working properly. .You can contact the company directly as to whether it is still good to use after 11/3/18.

I have thin fine curly hair, I tried using the ion 30 developer but found that I liked the 20 better. but I use the extra light ash blonde in the l'oreal brand. don't know if that makes a difference.

Yes I dose a lot more thin u think

You can also get a toner to cut down on the red.

We recommend test stranding to determine best processing time. Follow the guidelines enclosed in your hair color for mixing rations and timing suggestions.

I’ve used this to get my hair to a white. My hair is black and I took about 2 months to get to a white and I used wells t18 toner and purple shampoos. I had to let the toner and purple shampoos sit awhile longer in my hair so that it went to a white at the very end of the 2nd month. The purple in the shampoo and toner cancels out yellow. But using this developer on the scalp of my hair also helped get it to white. Hope this helps.

I’ve always been advised not to wash hair prior to coloring