 Hey guys Matt Beck free salon education comm and today we're gonna go over Doubling the 40 volume should we double 40 volume? What does it do? Why are we doubling 40 volume? Most of the time? When you look at in your chair, I guess but whatever I'm saying in the chair you get your guest in and She wants really bright highlights. So we're looking at maybe a high lift type color and we're saying okay Let's double the 40 volume because that will make it lighter But really what's happening is double the 40 volume doesn't change anything. Let me um, let me grab 40 volume here So let's say I take 40 volume and I pour it into a cup And let's say I fill it up to about this much right and then I take the same 40 volume And I pour it in and I double it up even more. So now I have this much 40 volume. Does that make it more intense? No, it doesn't make it more intense. What it does just gives me more 40 volume So I want to show you what it's doing and why we think it makes hair color lighter So here it is. So I have my bottle of water here. I have two cups They both have one drop each of a blue shot and a red shot A food coloring so we have a violet base, which is typically if I'm lifting with a high lift I'm probably going more violet or blue because I want to have that neutral base, right? We're trying to neutralize as we lift if we didn't want to do that then we would use bleach So I take my water the first one. I'm going to do I'm going to pour in my let's call this developer About halfway right. I still have some tone in there It's still violet looking if you can see that my blue shirt is is masking it now if I take that same developer So we still got our 40 volume developer and I double it up So now I pour all of this in here Basically what is happening to this is we're diluting the hair color when we double 40 we dilute the tone We do we dilute the pigment and when you dilute the pigment What's really happening is you're taking away the depth that is going into the hair color when you take away the depth It's going to appear brighter, but you're not going to have the control and that's the problem So if you double the 40 just understand why you're doing it because if you dilute that color as you're lifting You're not going to get the tone that you're looking for and you're going to end up with warmth in your hair color So I hope that this visual helps you guys. I hope you understand it a little bit better Check us out freesaloneducation.com subscribe to us on YouTube and we'll see you on the next video. Thanks