Is the effect of laser teeth whitening good?

Mar 19, 2025 Source: Cainiu Health
Disease description:

I am 22 years old and want to whiten my skin. I heard that laser treatment can help, and I would like to know whether laser skin whitening is effective.

Doctor's answer (1)
Dr. Chen Lu

In general, the effect of laser whitening is quite good. Laser whitening is a treatment method that uses laser beams of specific wavelengths to act on the skin, aiming to reduce pigmentation, improve uneven skin tone, and enhance skin brightness.

Laser whitening works by using high-energy light beams to break down melanin particles in the skin and stimulate collagen regeneration, thereby achieving skin whitening and rejuvenation. Different types of lasers target different skin concerns—for instance, Q-switched ruby lasers and alexandrite lasers are suitable for removing pigmented spots such as freckles and sunspots. Compared to traditional skin-whitening methods, laser whitening offers faster and more noticeable results, and because it is a non-contact treatment, it does not cause skin trauma or damage. Additionally, laser whitening can promote skin metabolism and reduce the number of melanocytes, thus maintaining a brighter skin tone over the long term.

However, laser whitening is not suitable for everyone; pregnant women, individuals with photosensitive skin, and those with active skin infections or inflammation should avoid it. Temporary redness, mild pain, or darkening of pigmented spots may occur after treatment, but these are normal reactions that typically subside on their own within a few days. It is recommended to undergo the treatment under the guidance of a qualified physician and to develop an appropriate treatment plan based on individual conditions.