Collodion adhesive

EEG testing over several days involves gluing electrodes to the scalp.

The standard glue hospitals and other services around the world use is called collodion. Collodion is preferred over other adhesives because it is extremely strong and durable for day-to-day wear. During sleep, for example, the head moves around on the pillow or mattress for several hours. Electrodes must be stuck on tight enough to withstand this kind of movement. It also has a high resistance to moisture — so it is water-resistant and sweat will not affect collodion’s grip on the scalp.

It is an ether-based glue, which means that it can only be removed with a solvent like acetone. Removal can take some time and some people find it very uncomfortable both physically and because of the smell of the acetone.

If not removed properly, the glue will remain on the scalp, causing additional irritation. Even after proper removal, some small amounts may remain in strands of hair. For aftercare, we recommend using an oil — such as coconut oil — to help loosen the glue from the hair. A generous amount should be used and allowed to stay on for several hours, followed by gentle combing to remove.

Please note that oil will not remove glue from the scalp. It is only recommended for loosening remaining glue from hair strands. For best results, we highly recommend going through the full process of removal while in our clinic so that you do not go home with glue on your scalp.

If you have skin or scalp sensitivity and are booked in for longer than four (4) days of monitoring, please let us know.