Hi snell...my guess is that it`s more likely to be a residue on the lace rather than your head....it might be a bit of both too...... I suppose your head would be that bit `cleaner`as you can go harder on it with solvents, whereas with the lace you have to be more gentle/ careful .. when you remove it and are washing/shampooing,leave it soak in lukewarm water a little longer and work some shampoo along the perimeter of the lace with your fingers...see if that helps.When it`s dry, you could moisten a clean piece of cotton cloth and gently rub along the perimeter just to lift/dissolve any remaining residues... Paul.