Some people find that scalp cooling is not as cold as they expected it to be, or that the cap feels less cool as the treatment continues. This is usually because the body acclimatizes quickly and may result in a numbing effect rather than a sensation of coldness. You may also find that the first treatment feels a lot colder in comparison to subsequent rounds - often because you know what to expect. There is no need to worry if your treatments don't seem as cold as they did to begin with, if the system is not cooling efficiently and therefore not achieving the appropriate temperatures, it will alert so that your clinical team is aware.