Aesthetic dermatology is the branch of dermatology focused on improving the appearance of skin rather than treating disease. Where a medical dermatologist diagnoses and manages conditions like skin cancer, eczema, or psoriasis, an aesthetic dermatologist works to reduce wrinkles, restore volume, even out skin tone, and create smoother, younger-looking skin. The field has grown rapidly, with the global aesthetic services market reaching an estimated $60 billion in 2026 and growing at nearly 14% per year.
How It Differs From Medical Dermatology
The simplest way to think about the divide: medical dermatology treats what’s wrong with your skin, and aesthetic dermatology changes how your skin looks. A medical dermatologist handles painful rashes, suspicious moles, inflammatory conditions, and infections. An aesthetic dermatologist performs procedures like injectable treatments, laser resurfacing, chemical peels, and microneedling. Some concerns sit in both camps. Acne scarring, for example, may begin as a medical issue and transition into an aesthetic one once the active disease is controlled.
In practice, many dermatologists do both. A board-certified dermatologist completes a medical school degree and a residency program accredited by a recognized body like the ACGME, then passes board examinations. From there, they may choose to focus their practice on cosmetic procedures, medical conditions, or a mix of the two. The training foundation is the same.
The Most Popular Procedures
Data from the American Society of Plastic Surgeons paints a clear picture of what patients want most. In 2024, the five most performed minimally invasive cosmetic procedures were:
- Neuromodulator injections (Botox and similar products): 9.9 million procedures
- Hyaluronic acid fillers: 5.3 million procedures
- Skin resurfacing (chemical peels, lasers, microdermabrasion): 3.7 million procedures
- Laser skin treatments (hair removal, vein treatment, tattoo removal): 3.1 million procedures
- Lip augmentation with injectables: 1.4 million procedures
Nearly all of the top procedures are non-surgical and require little to no downtime, which helps explain their popularity.
How Neuromodulators Work
Neuromodulators like Botox, Dysport, and Xeomin are the single most common aesthetic procedure worldwide. They use a purified form of botulinum toxin type A, which temporarily blocks the chemical signal that tells muscles to contract. When injected into small facial muscles, the muscles relax and the overlying skin smooths out. This is why they work best on “dynamic” wrinkles, the lines that form from repeated expressions like frowning or squinting.
The effect isn’t permanent. Results typically last three to four months before the nerve signals gradually recover and the muscle regains its full movement. Beyond wrinkle reduction, neuromodulators are also used for excessive sweating and subtle facial contouring, such as slimming the jawline by relaxing the chewing muscles.
Dermal Fillers and Volume Restoration
Fillers take a different approach. Instead of relaxing muscles, they physically add volume beneath the skin’s surface. The most widely used fillers are made from hyaluronic acid, a substance your body produces naturally to keep skin hydrated and plump. Brands like Juvederm, Restylane, and their many sub-products are designed with different thicknesses for different areas of the face: thinner formulations for lips and under-eye hollows, thicker ones for cheeks and jawlines.
Hyaluronic acid fillers are traditionally classified as medium-term, lasting between 3 and 12 months depending on the product, the treatment area, and individual metabolism. One practical advantage of hyaluronic acid fillers is that they can be dissolved with an enzyme injection if results aren’t what you wanted.
Common temporary side effects include swelling, bruising, redness, and tenderness at the injection site. These typically resolve within a few days. Fillers should not be injected near an active skin infection, and anyone with a known allergy to the filler material or the lidocaine sometimes mixed into the syringe is not a candidate.
Laser Treatments: Ablative vs. Non-Ablative
Lasers are the workhorses of aesthetic dermatology, used for everything from removing sunspots and spider veins to reducing acne scars and resurfacing aged skin. The key distinction is between ablative and non-ablative lasers.
Ablative lasers vaporize the outer layer of skin in a controlled, precise way. They superheat water molecules in skin cells, turning them to gas and peeling away damaged tissue. The results are dramatic: significant improvement in wrinkles, scars, and discoloration. The trade-off is a longer recovery, often involving days to weeks of redness, peeling, and sensitivity.
Non-ablative lasers leave the skin’s surface intact. They deliver energy into the deeper layers, triggering the body to remodel collagen from below. Recovery is much easier, sometimes just a few hours of redness with no peeling at all. The results, however, are more moderate. Non-ablative treatments work best for finer wrinkles, mild texture issues, and uneven pigmentation, and they often require multiple sessions to achieve noticeable improvement.
Many patients start with non-ablative treatments and move to ablative options only if they want more significant correction.
Chemical Peels
Chemical peels use acid solutions to remove damaged outer layers of skin in a controlled way. They’re categorized by depth. Superficial peels use lower concentrations of acids like glycolic acid (typically 20 to 70%) applied briefly to the skin. These target only the outermost layer and are useful for mild discoloration, rough texture, and dullness. Recovery is minimal.
Medium-depth peels use higher concentrations or stronger acids like trichloroacetic acid at 30 to 40%, which penetrates into the upper dermis. These address moderate sun damage, deeper pigmentation, and fine lines, but come with several days of peeling and redness. Deep peels penetrate further still and carry a higher risk of complications, including scarring and post-inflammatory pigment changes. The general rule is straightforward: deeper peels produce more visible results but require longer healing and carry more risk.
Microneedling and Collagen Induction
Microneedling works on a fundamentally different principle from lasers and peels. Instead of removing skin or delivering light energy, it creates thousands of tiny punctures in the skin’s surface using a device studded with fine needles. These controlled micro-injuries trigger the body’s wound repair process.
The healing cascade unfolds in stages. First, specialized skin cells called fibroblasts migrate to the treated area and begin producing new collagen and elastin, the proteins responsible for skin firmness and elasticity. Initially, they produce a softer form of collagen (type III), which is gradually replaced over weeks and months by the stronger, more structured type I collagen. Elastin follows a similar pattern: existing elastin breaks down first, but new elastin synthesis increases around three months after treatment.
This makes microneedling a slower-building procedure. You won’t see full results for several months, and most treatment plans involve a series of sessions. It’s commonly used for acne scarring, fine lines, enlarged pores, and overall skin texture. Because the micro-injuries also temporarily increase skin permeability, microneedling is sometimes combined with topical serums that can penetrate more deeply during and after treatment.
What to Expect as a Patient
Most aesthetic dermatology procedures happen in an office setting and don’t require general anesthesia. Injectables take 15 to 30 minutes. Laser sessions vary from a few minutes to over an hour depending on the area and technique. A topical numbing cream is commonly applied before more uncomfortable procedures like deeper laser treatments or microneedling.
Results range from immediately visible (fillers add volume on the spot) to gradually emerging over weeks or months (microneedling and non-ablative lasers rely on your body’s own collagen production). Temporary side effects across most procedures include redness, mild swelling, and sensitivity. More aggressive treatments like ablative lasers and deep peels involve a more significant recovery period with peeling, scabbing, and sun sensitivity.
The most important variable in your outcome is the skill and training of your provider. Board-certified dermatologists have the deepest understanding of skin anatomy and the broadest training in both the medical and cosmetic sides of skin care. This matters especially for procedures involving lasers and injectables near delicate structures like the eyes, lips, and blood vessels, where precision and knowledge of facial anatomy directly affect both safety and results.