There are currently 2 known instances where there exists a possibility that hair laser removal will make hair grow back thicker and darker than it was before treatment. Please remember that one is preventable while the other is so rare, the likelihood of it happening are extremely small.
The first scenario can happen to anyone, though many people that go for laser treatment might not be conscious of this risk just before treatment. In order to perform 【激光脫毛】, the technician will require you to shave the preferred area a couple of days prior to your appointment. Your hair has to be as short as possible, but still be visible, to ensure the laser to operate to the full potential. Unfortunately, some areas that individuals want to have lasered, (including the face and back), contain a mixture of the dark coarse hairs that they want gone and “peach fuzz” (the extremely fine and colorless hairs that cover a lot of our body). When shaving this place in preparation for laser treatment, the peach fuzz which is present also gets shaved. With shaving, hairs often re-grow thicker, darker, and faster with every shave. The fine hairs which were once unnoticeable may now begin to appear darker upon return, which could produce the illusion more hair is starting to grow after having laser treatment.
The 2nd instance is a condition called “paradoxical hypertrichosis”. It is a rare reaction which can be experienced after hair laser removal treatment. As paradoxical hypertrichosis, (or postlaser hypertrichosis), continues to be a somewhat new and extremely rare condition, there has not been a great deal of research done on the subject. It is difficult to determine what the actual reason for this phenomenon is. Some specialists claim that this unwanted hair regrowth could be caused by extremely low intensity laser or IPL treatments at levels which can be too low to work and end up stimulating new hair regrowth in the hair bulb rather than destroying the hair bulb completely. Others suggest that ethnic background may be a factor as studies have found that this reaction tends to happen more in individuals with skin types 3, 4, and 5 (olive and darker skin) than it can in people who have lighter skin. Additionally there is the chance that certain medication can increase the risk of paradoxical hypertrichosis if taken simultaneously because the laser treatments. As you can see, people with this disorder are extremely few and far between that it is difficult to get a proper sampling.
Regardless of the suggested factors of paradoxical hypertrichosis, it is extremely important to find a laser technician that is skilled and qualified to perform your treatments. They should be knowledgeable enough to ascertain the correct laser intensity setting for the particular hair and skin attributes. Too low can be ineffective and cause negative effects. Intensity that is too much could cause negative effects including minor burns and skin discoloration. The perfect balance will safely ujuvnd effectively remove your unwanted hair making your hair laser removal experience a positive one.
Though it may be unusual that 【激光脫毛】 will make your own hair re-grow thicker, it has been proven to happen sometimes. Should you be concerned, or if you know that this area you need to have treated includes peach fuzz, perhaps a different method like electrolysis hair removal might be a better alternative to suit your needs. Electrolysis will not require you to shave before treatment so you may not run the potential risk of shaving over any peach fuzz and causing it to develop back thicker. Each hair is individually treated so you may not run the potential risk of some other area of your skin being treated besides where you would like to be treated.