A completely white image.
Woman in black scrubs, smiling, hand on hip. Against a white background.

Jennifer Mergist

Medical Aesthetician


Jennifer Mergist is an experienced and licensed Medical Aesthetician who has been delivering advanced aesthetic treatments at Williamson Cosmetic Center since 2013. Known for her exceptional technique and refined skill set, she specializes in innovative laser technologies and non-invasive skin rejuvenation, helping patients achieve natural, confidence-boosting results.


Jennifer is extensively trained in a wide range of cosmetic and laser procedures, including Morpheus8, IPL Photo Rejuvenation, ResurFX Fractional Laser, Photofractional Laser Treatments, Moxi, Laser Hair Removal, Microneedling, Chemical Peels, DiamondGlow® Facials, Dermaplaning, Exilis, Piqo4 Skin Toning, and post-surgical camouflage makeup. Her comprehensive expertise in customized skincare regimens, advanced facial treatments, and cutting-edge aesthetic technology allows her to tailor each treatment plan to meet her patients’ unique goals.


A graduate of the prestigious Aveda Arts & Sciences Institute in Lafayette, Louisiana, Jennifer has dedicated her career to mastering cosmetic laser and aesthetic advancements, ensuring her patients receive the highest standard of care and results-driven treatments.

April 1, 2026
CoolSculpting is a non-invasive medical procedure that uses controlled cooling to freeze and eliminate stubborn fat cells. It is designed for body contouring rather than weight loss, targeting localized fat deposits that have not responded to diet and exercise. How It Works The procedure is based on the scientific finding that fat cells are more sensitive to cold temperatures than surrounding skin, nerves, and muscle tissue. The Process : A specialized applicator suctions the skin and fat into a "cooling cup". Cell Death : The device cools the targeted fat cells to a temperature that causes them to crystallize and die (a process called apoptosis ). Elimination : Over several weeks to months, the body's immune and lymphatic systems naturally process and flush out these dead cells as waste. Key Details Target Areas : It is FDA-cleared for nine specific areas, including the abdomen, flanks (love handles), thighs, bra fat, back fat, upper arms, and under the chin or jawline. Results : You can expect up to a 20% to 25% reduction in fat in the treated area after a single session. Initial changes may appear in three weeks, but full results typically take three to six months to become visible. Downtime : Since it is non-surgical and requires no anesthesia, there is usually zero downtime , allowing patients to return to normal activities immediately. Permanence : Once fat cells are destroyed and eliminated, they do not return . However, remaining fat cells in the body can still expand if you gain weight. Side Effects and Risks Common Side Effects : Temporary redness, swelling, bruising, skin sensitivity, and a pulling or pinching sensation during the procedure. Rare Risk (PAH) : A rare but serious side effect is Paradoxical Adipose Hyperplasia (PAH) , where the treated fat area actually grows larger and hardens rather than shrinking. Estimates suggest this occurs in less than 1% of treatments. Candidates The ideal candidate is someone within 10 to 30 pounds of their goal weight with "pinchable" fat. It is not suitable for individuals with obesity or certain cold-related conditions like Raynaud's disease or cryoglobulinemia. CALL US NOW TO BOOK YOUR CONSULT AT (225) 927-7546 OR CLICK HERE TO SCHEDULE ONLINE FOR OUR BATON ROUGE OR LAKE CHARLES LOCATION
Starting a weight-loss journey?
By WCC April 1, 2026
Let us be your glow-up partner along the way. Book a consult and let’s create your personalized face + body preservation plan.
By Jennifer Mergist March 5, 2026
Glow Into Summer: Why Winter is the Perfect Time for a MOXI Laser Treatment
By Glynn O'Neill & Jennifer Mergist March 5, 2026
The Journey to Luminous, Natural Results: A Custom Care Study