If you want to whiten your teeth in-office, try Opalescence Boost in-office whitening. This power whitening gel can offer brighter, whiter teeth after about an hour in the dental chair. Opalescence Boost whitening Gel is designed to maximize comfort. Opalescence Boost in-office whitening is chemically activated and does not require uncomfortable lights or lasers to work. It is a safe and effective way to get a brighter, whiter smile. It can be used in conjunction with take-home whitening.