How laser hair removal works
Laser hair removal works by sending light into the skin at a wavelength that the pigment in your hair absorbs more readily than the surrounding skin does. That absorbed light becomes heat, and the heat damages the follicle enough to slow or stop it producing hair.
Two things follow from that mechanism, and they explain almost every question people have about the treatment.
The first is that the treatment needs pigment to find its target. Hair containing darker pigment absorbs the light well. Blonde, red, gray and white hair carry very little of the pigment the laser is looking for, and may respond poorly or may not be treatable at all — no matter how many treatments are booked. Any practice that tells you otherwise is selling you sessions.
The second is that it only works on hair that is actively growing. At any moment, only a portion of the hair in a given area is in its growth phase — the rest is resting or shedding, and a follicle in those phases has nothing for the light to act on. That is the entire reason a single treatment cannot finish the job.
The device, and why the wavelengths matter
Treatments here are performed with the Elite iQ Pro, which combines two laser wavelengths: Alexandrite 755 nm and Nd:YAG 1064 nm. Having both matters, because they behave differently in skin. The shorter Alexandrite wavelength is strongly absorbed by pigment, and the longer Nd:YAG wavelength travels deeper and interacts less with pigment in the surrounding skin.
In practice that combination is what allows a broad range of skin tones to be treated when it is clinically appropriate, rather than restricting the treatment to the narrow band of very dark hair on very light skin it was once limited to. The platform also works with advanced cooling technology, which protects the skin surface and is a large part of why most patients describe the sensation as tolerable rather than painful.
None of that removes the need for an assessment. Which wavelength, which settings, and whether treatment is appropriate for you at all is decided in person after your skin and hair have been looked at.
How many treatments, and how far apart
Because only some of your hair is in its growth phase on any given day, each treatment reaches only the portion that happens to be active. Waiting several weeks lets the next portion enter growth, and that is what the following treatment addresses.
Most patients need approximately eight to 12 treatments, followed by occasional maintenance treatments. The number needed varies with the area, hair colour and thickness, skin type, hormones, how consistently treatments are kept, and individual response. Appointments are typically scheduled about four to eight weeks apart depending on the area and its natural hair-growth cycle — facial areas may be treated more frequently than body areas.
Those are general ranges rather than a promise about your result. Your own schedule is recommended at the consultation, in writing, before anything is booked. Prices are published by area on the pricing page, including three-treatment packages — worth reading alongside the numbers above, because a package of three is a block of treatments rather than a full course.
What results look like, and when
Many patients notice slower growth and shedding within about three weeks after a treatment. Treated hairs often appear to keep growing for a week or two first — that is the follicle releasing them rather than regrowth, and it catches people out.
Results become more noticeable as the series progresses rather than arriving all at once. That is a direct consequence of the growth-cycle problem above: each treatment can only reach the follicles that were active on the day.
Areas that can be treated
Common areas include the face, neck, underarms, arms, hands, chest, back, bikini area, Brazilian area and legs. The external ears, hairline and other appropriate external areas may also be treated after evaluation. Laser treatment is not performed inside the nostrils, over the eyes, or on other unsafe areas — if you are asking about an area not listed here, ask rather than assume.
How to prepare
Shave the area approximately 12 to 24 hours before your appointment. This sounds counterintuitive, but the laser needs the follicle beneath the skin, not the hair above it — and hair left on the surface absorbs energy where it does no good and can irritate the skin.
Do not wax, pluck, thread, or use a chemical hair remover or an epilator for at least two to four weeks beforehand, because the hair follicle must be present for the laser to target it. Avoid tanning and excessive sun exposure for at least two to four weeks before and immediately after, and disclose all medications, supplements and skincare products. These precautions are not fussiness; they reduce the risk of burns, discoloration and other unwanted skin reactions.
Between appointments, shaving is the preferred way to manage hair. It is the one hair-removal method that leaves the target intact.
Recent tanning, and when treatment gets postponed
Recent tanning — including sun exposure, tanning beds and self-tanner — can interfere with treatment and increase the risk of burns or unwanted pigmentation changes. Tell us about any recent tanning before your appointment; treatment may need to be postponed for your safety, and in Louisiana in summer that is a genuinely common conversation.
Treatment may also need to be postponed because of pregnancy, active infection, open wounds, certain medications, recent procedures or specific health conditions. A complete medical history and medication list are required, and medical clearance may occasionally be requested.
Afterwards
Temporary redness, warmth or mild swelling in the treated area is normal and usually settles within a day or so. Avoid unnecessary heat, friction, irritating skincare products and sun exposure as directed, wear sunscreen, and follow the specific aftercare instructions you are given for your skin and the area treated.
What laser hair removal will not do
It provides long-term hair reduction rather than a guarantee that every hair will be permanently removed, and the distinction is worth being precise about. A well-run course substantially thins and lightens growth, and for many people the result is long-lasting. It does not guarantee that no hair ever grows in that area again, and any clinic promising permanent removal is overstating what the technology does.
It also will not treat hair the light cannot see, will not resolve an underlying hormonal cause of unwanted hair growth, and is not a treatment for skin texture or tone. For those, laser skin rejuvenation and microneedling address different concerns entirely — and a consultation will tell you which, if any, fits what you actually want to change.
Common questions
Is laser hair removal permanent, and how many treatments will I need?
Laser hair removal provides long-term hair reduction rather than a guarantee that every hair will be permanently removed. Most patients need approximately eight to 12 treatments, followed by occasional maintenance treatments. The number needed varies based on the area, hair color and thickness, skin type, hormones, treatment consistency, and individual response.
How often are laser hair removal treatments scheduled?
Appointments are typically scheduled about four to eight weeks apart, depending on the area being treated and its natural hair-growth cycle. Facial areas may be treated more frequently than body areas. Your provider will recommend the best schedule for you.
How should I prepare for laser hair removal?
Shave the area approximately 12–24 hours before your appointment. Do not wax, pluck, thread, or use a chemical hair remover or an epilator for at least two to four weeks beforehand because the hair follicle must be present for the laser to target it. Avoid tanning and excessive sun exposure for at least two to four weeks and immediately after, and disclose all medications, supplements, and skincare products. These precautions help reduce the risk of burns, discoloration, or other unwanted skin reactions.
Can all skin tones and hair colors be treated?
The Elite iQ Pro combines Alexandrite 755 nm and Nd:YAG 1064 nm technology, allowing us to treat a broad range of skin tones when clinically appropriate. However, laser hair removal works best on hair containing darker pigment. Blonde, red, gray, and white hair may respond poorly or may not be treatable because it contains very little pigment for the laser to target.
Does laser hair removal hurt?
Most patients describe the sensation as a quick snap, pinch, or brief burst of heat. The Elite iQ Pro works with advanced cooling technology to help protect the skin and make treatment more comfortable.
What areas can be treated with laser hair removal?
Common areas include the face, neck, underarms, arms, hands, chest, back, bikini area, Brazilian area, and legs. The external ears, hairline, and other appropriate external areas may also be treated after evaluation. Laser treatment is not performed inside the nostrils, over the eyes, or on other unsafe areas.
Can I shave between laser hair removal appointments?
Yes. Shaving is the preferred way to manage hair between treatments. Do not wax, pluck, thread, or use an epilator two weeks before your treatment because these methods remove the follicle the laser needs to target.
When will I begin seeing results from laser hair removal?
Many patients notice slower growth and shedding within three weeks after treatment. Results become more noticeable as the treatment series progresses. Because hair grows in cycles, multiple sessions are required to target follicles during their active growth phase.
Can I receive laser treatment if I have a tan?
Recent tanning — including sun exposure, tanning beds, and self-tanner — can interfere with treatment and increase the risk of burns or unwanted pigmentation changes. Please tell us about any recent tanning before your appointment. Your treatment may need to be postponed for your safety.
Find out whether it suits you
Celtic Lasers opens in Baton Rouge in fall 2026. Request an early consultation and we will evaluate your skin and hair, review your history and medications, tell you honestly whether the treatment is likely to work for you, and put a plan in writing before anything is booked.
Join the early list