Hi everyone, I'm a base 5 naturally but have had bleach blonde hair for around 5 years I recently went to a base 6 with a slight red tone and then a base 5 with a slight red tone both are semi's. I now want to go 6r or 6rb goldwell as I want to be more red and not so dark. What's the best way for me to do this? What should mix it with? I've never used goldwell before and would prefer to stay using semi's. Think Amy childs.