I`m no expert in ` percentages`...... I tried Surgical spirit before---- no use for breaking -down the residue on the lace or scalp.....it was ok-ish for de-bonding the lace but that was about it..... I now just use it to wipe my scalp with a cotton- pad before bonding to remove oils [even after shampooing in the shower, scalp can still have oils in the pores] ....the surgical spirit makes the skin squeaky-clean and ready for tape / glue. The best thing to release your system from glue/tape is `Lace-release` and then use a glue -melter such as ` Pure` [alcohol-based] or a citrus-based solvent such as C-22, or Desolvit, to remove residues on the scalp and / or lace / poly.
Citrus solvent must be shampooed out of lace otherwise it will interfere with your new bond, whereas ` Pure` will evaporate off, therefore does not need shampooing-out.