How can you confirm a reversal in the Bollinger Bands? Take the current $AGT 4-hour timeframe as an example:
The closing price is above the upper band at 0.03755
The band width starts expanding from 23.1%
Trading volume rises at the same time
Then the price retests the middle band at 0.02613 without breaking below it
The 4-hour timeframe reacts quickly, but it also produces many false signals, so consider the daily trend.

Don’t take this as investment advice.