This may be long.
First to answer the expected feeling. The feeling you get when you get chills or goose bumps. You are likely to feel it like that and a bit warm, where they are doing the work and sometimes it will reverberate to other parts of the body. For the lack of a better description like a post orgasm vibe.
Cleansing an aura is a temporary effect. One needs to do internal reflection, meditation and meditation with the body to resolve the traumas and attachments that connected to the body, and our relationship to it emotionally, mentally, and therefore energetically. Without managing that, the patterns of life and attracting the same type or even projecting it from yourself, that will encourage the same type of negative aura energies.
If you feel depleted after the aura cleansed, the practitioner may have gone too deep and or maybe a vampire.
If you feel prickles, hot spots, etc. could be a vampire or person who doesn’t know what they are doing, causing damage.
If they are using their hands like dribbling a basketball over your chakra, just stop the session. They are poorly trained are addicted in this type of vampirism.
Aura cleansing is temporary. Doing the internal work is more important.