Wanting to go strawberry blonde

Here's an image for people who don't know (I didn't) -



Take a good, close look at your natural skin coloring. Strawberry blonde (or any reddish shade) over pale, blue-tinted skin {in the "Color Me Beautiful" books, they call that Winter (these days they go with 12 seasons, see - http://www.prettyyourworld.com/colortheory.html) - think someone like Joan Baez in terms of shading} is going to look weird and brassy and out of place.

To make any color change, I believe you'll need to strip the color first, but do consider, as I mentioned above, how it'll look with your skin tones.

In the context of hair coloring I will suggest you to strip down bleach from hairs so that your hairs might get proper strawberry blonde color. If you imply new color over bleached hairs it might be possible that you will get the same color from what you afraid.