Anyone ever do a 'Shampoo Cap'?

 

It is similar to toning the hair.....it is done to pull the colors closer together to make the difference less noticible. Yes it can be done with demi color however it is usually done with permanent color. It helps to blur the line of demarcation between the different colors to make it less noticible.

 

To refresh your mid-shafts to ends (AKA previously colored hair) you could use the same color as your roots just use a semi or demi permanent color. Permanent haircolor over hair that has already been colored with permanent haircolor will just weaken the tensile strength of the hair by reforming the disulfide bonds of the hair to a cystiene bond....this weakens the hair strand by 3-5% each time more permanent color is pulled thru the hair.....do the math.....5 or 6 times of tossing permanent color over previously colored permanent hair that weakens the hairstrand by 15-18% not too mention it dries out and damages the cuticle which leads to dryness, possible breakage, etc.

 

Hope I didn't confuse ya.

 

G'luck