Treatment Guides

Microneedling: The Science Behind the Needles

7 min read|Updated January 20, 2026|By Dr. Élise Moreau, MD, Board-Certified Dermatologist

The Science of Controlled Injury

Microneedling works on a principle called collagen induction therapy. A device containing fine needles creates thousands of microscopic channels in the skin's surface. This controlled injury triggers your body's wound-healing cascade: inflammation clears damaged cells, proliferation produces new collagen and elastin, and remodeling reorganizes the new tissue into stronger, smoother skin. The result is genuine skin regeneration — not just a surface-level treatment.

What Microneedling Treats

The collagen-stimulating effects of microneedling make it effective for a range of concerns: acne scarring (both rolling and boxcar types), enlarged pores, fine lines and wrinkles, uneven skin texture, stretch marks, hyperpigmentation, and overall skin laxity. It's particularly valuable because it works on all skin tones — unlike some laser treatments that carry pigmentation risks for darker skin types.

Professional vs. At-Home Devices

At-home dermarollers and stamping devices use shorter needles (0.25-0.5mm) that only affect the epidermis. Professional microneedling at Lumière uses medical-grade devices with adjustable needle depths up to 2.5mm, reaching the dermis where collagen production actually occurs. The difference in results is significant. Professional treatments also maintain sterile conditions and can be combined with serums like PRP (platelet-rich plasma) for enhanced results.

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What to Expect During Treatment

After cleansing, your provider applies a topical numbing cream for 20-30 minutes. The microneedling treatment itself takes about 30 minutes for a full face. You'll feel pressure and a vibrating sensation, but most patients find it very tolerable with numbing. Immediately after, your skin will look red — similar to a moderate sunburn. This redness typically fades within 24-48 hours.

Results and Treatment Schedule

You'll notice smoother skin texture within a week, but the real magic happens over months as new collagen matures. Most patients see optimal results after 3-4 treatments spaced 4-6 weeks apart. Maintenance treatments every 3-6 months help sustain the collagen-building benefits. Microneedling is often combined with PRP (the 'vampire facial') for accelerated healing and enhanced results.

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About the Author

Dr. Élise Moreau

MD, Board-Certified Dermatologist

Dr. Moreau founded Lumière with a singular vision: aesthetic medicine as art. Trained in Paris and New York, she specializes in advanced injectables, laser procedures, and comprehensive facial rejuvenation.

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