Hi again.... well, I guess anything is possible ..having ruled out the other things [lace itself] .... I`m doubtful there would be a residue of anything on your skin as such..... have you tried using `scalp protector` [it`s supposed to give a good `base` for adhesives] it`s on Debbie`s site.... others have found it good especially for preventing anything like sweat interfering with anything while you`re doing your bond.... she also has a really nice `` Deep cleansing mask`` which has tea-tree and lavender in it .. I have it and it`s really good for getting the scalp really clean..... you can obviously get similar products locally [except the ``Scalp Protector``] Try something like that ... I`m doubtful that your body chemistry has suddenly changed or anything like that... annoying all right but there has to be a logical explanation ...try something like the exfoliating product you have to hand, and /or maybe get a bottle of scalp-protector and see if that helps improve the hold....cheers.. Paul.