Both are available at The Body Shop... u don't need to dilute them, just dab it with directly onto the scars or pimples. Red scars? Scars left by acne? If they're red, give them time to settle down cuz eventually they'll turn into a darker brown..and shud be treated only then.. red "scars" are broken skin and chemicals shudn't be used on them.
Home remedies work, but take slightly longer :)
even ur home remedy of red sandalwood for scars 2 be used only on brown or darker acne scars?
wat 2 be done for red acne scars?