The ideal case is fair skin with dark, black hairs because most of the laser energy is absorbed by the dark hair, while fair skin absorbs very little energy. Fewer sessions are needed and the results are better in a shorter period of time.
The ARION II Alexandrite Laser with which our office is equipped is a 4th generation laser with the ability to parameterize the pulse frequency, so that the treatment can be safely performed on darker skin. People with darker skin can also have laser treatment, but the results are not as quickly visible, more sessions are necessary and clearly the operator is required to have more experience, as dark skin absorbs a large amount of energy. The same applies to sun-tanned skin. People with very dark skin are probably not suitable candidates for Laser. For the same reason, Laser hair removal is avoided if the skin is already tanned.
Darker colored hairs absorb more energy and disappear faster. Very dark hairs react best to laser. Lighter colored hairs are more difficult to treat, take several sessions and the results are not always predictable. Blond and red hair absorbs the energy less than darker hair. For very blond and white hairs, laser is not a solution because they do not absorb the laser energy.