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How Laser Hair Removal Works: The Science Behind It

Close-up of a person receiving laser hair removal on the lower leg using a handheld device operated by a gloved technician in Savannah, GA

Many people feel frustrated by the cycle of shaving, waxing, or plucking, which can lead to skin irritation and never truly solve the problem. Unwanted hair can feel like a never-ending hassle, especially when traditional methods only offer short-term solutions. If you’ve ever wished there was a more reliable way to stay smooth without constant upkeep, you’re not alone. 

At Altera Aesthetix, Laser Hair Removal in Savannah, GA, provides a scientifically proven approach that targets the source of hair growth.

The Role of Hair Follicle Biology in Laser Hair Removal

Hair grows in cycles: anagen (growth), catagen (transitional), and telogen (resting). Laser Hair Removal is most effective during the anagen phase when the hair shaft is connected to the follicle’s blood supply. The follicle contains melanin, the pigment that absorbs laser energy.

  • Anagen Phase: Active growth lasting 2–7 years.
  • Catagen Phase: A brief transition lasting 2–3 weeks.
  • Telogen Phase: Resting period lasting up to 3 months.

Because not all hairs are in the same phase, multiple sessions are needed to achieve optimal reduction. Additionally, the anagen phase varies by body area—for example, facial hair often has a shorter active growth phase compared to scalp hair. The density and pigment of the follicles also influence how effectively the laser targets them. 

The Role of Selective Photothermolysis

The Candela GentleMax Pro uses the principle of selective photothermolysis, which means the laser energy selectively heats the target (melanin in the follicle) without damaging surrounding tissues. The device offers two wavelengths:

  • 755 nm Alexandrite Laser: Ideal for lighter skin types.
  • 1064 nm Nd: YAG Laser: Suitable for laser hair removal for dark skin.

Melanin absorbs the energy, which then converts to heat. This heat damages the follicle’s stem cells, inhibiting regrowth.

Why Candela GentleMax Pro Stands Out

Several features make the Candela GentleMax Pro a top choice for best laser hair removal:

  • Dual Wavelengths: Treats diverse skin tones.
  • Dynamic Cooling Device (DCD): Sprays cryogen milliseconds before each pulse, cooling the epidermis.
  • Variable Spot Sizes: Allows treatment of small areas like the upper lip or large zones like the back or laser hair removal for legs.

This combination improves precision, comfort, and safety.

What Happens During a Session?

Each laser pulse lasts only a fraction of a second. The energy penetrates the skin and targets the follicle while leaving nearby skin unharmed. After the follicle absorbs the heat, its regenerative capacity diminishes.

A single session may reduce up to 20% of hair in the treatment area. Over time, subsequent sessions target new hairs entering the growth phase.

Treating Different Areas

The Candela system adapts to various body zones:

  • Laser hair removal for face: Chin, upper lip, cheeks
  • Underarms
  • Back and chest
  • Bikini area
  • Laser hair removal for ingrown hairs in sensitive spots

Large areas require higher fluence and larger spot sizes to maintain efficiency.

Special Considerations for Skin Tone

One advantage of the GentleMax Pro is its ability to deliver safe laser hair removal for dark skin. The Nd: YAG laser penetrates deeper into the dermis with less melanin absorption in the epidermis, reducing the risks of pigmentary changes.

For lighter skin, the Alexandrite laser offers optimal absorption by melanin-rich follicles, maximizing effectiveness. The system also allows adjustment of pulse duration and fluence to customize treatment based on hair thickness and skin characteristics. The built-in cooling spray further reduces the risk of overheating the epidermis, enhancing safety for all skin types.

Aftercare and Results

Post-treatment, follicles remain in place but are inactive. Over 1–2 weeks, treated hairs shed naturally. Mild redness or swelling may occur but typically resolves quickly.

Laser hair removal aftercare tips:

  • Avoid sun exposure for at least two weeks.
  • Refrain from exfoliation for a few days.
  • Use cool compresses to soothe the area.
  • Moisturize with non-irritating products.

How Many Treatments Will You Need?

Most people see a significant reduction after 4–6 sessions spaced 4–8 weeks apart. Factors affecting treatment plans include:

  • Hair thickness and color
  • Skin type
  • Treatment area

Periodic maintenance sessions may be recommended. Some patients with hormonal imbalances, such as polycystic ovary syndrome, may need additional treatments to maintain results. Areas with dense, coarse hair, like the bikini line or back, can require more sessions. In contrast, fine or lighter hair may respond more slowly and sometimes partially, depending on the melanin content and laser settings. A consultation will help determine the most suitable plan.

Is It Safe?

Candela GentleMax Pro is FDA-cleared, CE-marked for European use, and widely used in dermatology and medical aesthetics. It features built-in calibration systems that check energy output with each pulse to ensure consistent delivery and offers real-time skin monitoring to adjust fluence and pulse duration based on the skin’s response. Safety protocols include skin assessments, test spots, and eye protection during treatment.

Myths and Facts

Many people have questions or assumptions about laser hair removal that aren’t always accurate. Here’s a look at some common myths and the truth behind them.

Myth: Laser hair removal is extremely painful.
Fact: Most patients describe it as a snapping sensation similar to a rubber band, and the cooling device makes it very tolerable.

Myth: Laser hair removal exposes you to radiation.
Fact: The lasers are non-ionizing, so they do not produce radiation that damages DNA.

Myth: Laser treatments make hair grow back thicker.
Fact: Treated hairs grow back finer and sparser over time, if they regrow at all.

Ready to Take the Next Step?

Understanding the science behind Laser Hair Removal highlights why it remains a trusted solution for smoother skin. The combination of selective photothermolysis, dual wavelengths, and advanced cooling systems ensures effective and safe results.

For residents seeking Laser Hair Removal in Savannah, GA, the team at Altera Aesthetix is ready to help.

Say Goodbye to Shaving – Book Now and experience lasting confidence.

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