Can you mix 20 volume and 40 volume developer?



  • Can you double 20 volume creme developer to replace 40 volume creme developer?

    Good idea, but unfortunately that won’t work. There’s no way to make a 40 volume, you will need

  • Leave a Comment


    Login

    Lost your password?

    By continuing to use the site, you agree to the use of cookies. more information

    The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this. Read more: https://www.google.com/policies/technologies/cookies/

    Close