As someone with silver blonde hair, I'm always trying new toning products. However nothing compares to Fudge!
It's so potent - I only need to leave it in my hair for a few minutes and my colour is refreshed. Sometimes I will also leave it in for longer (10-20 minutes) if I need more intense toning.
The only problem with this is that it can be quite drying. Although, if you condition after use, you shouldn't have a problem. Personally I don't mind about the dryness because I always use conditioner after shampoo, and I use treatments at least once a week so it doesn't bother me.
If you haven't tried this and you have light blonde hair, I definitely recommend it. If you use it 2-3 times a week and leave it in for a few minutes, it should work great for you. Be careful how long you leave it in for if you don't want a violet tint - sometimes if I leave it in for too long it can leave a few violet streaks but I personally like that.
When I was blonde this was hands down the BEST product. I actually used a toning mask that needed to be left in for 20mins at one point and Fudge Clean Blonde shampoo blew that messy, silly toning mask out of the water. I've also used L'Oreal Professional purple shampoo and fudge Clean Blonde is far superior. The results are stunning and you can leave it in for longer depending on how deep/ cool you want the color to go. I brought this for under $20 and it lasts such a long time as you only need to use it once a week max. Fantastic. Will definitely use again when I eventually go back to blonde.