How Stem Cell Works

Stem cell therapy in Korea follows a 4-stage autologous blood protocol completed within 60-90 minutes. A 20-30ml blood draw undergoes centrifugation at 3,000-4,000 RPM for 12-15 minutes, separating platelet-rich plasma and growth factors. The concentrated serum is then reinjected into target areas using micro-needling or direct injection techniques under topical anesthesia.
How Stem Cell Works

Stage 1: Consultation and Blood Collection

The stem cell procedure begins with a 15-20 minute consultation where the Aesthetic Medicine Specialist evaluates skin condition, treatment goals, and medical history. A standardized skin analysis identifies target areas for regeneration, whether facial rejuvenation, scalp restoration, or systemic anti-aging. Once the treatment plan is confirmed, a nurse draws 20-30ml of venous blood from the inner elbow using a closed-system collection kit. The entire blood draw takes 3-5 minutes and feels similar to a routine blood test. KFDA-approved sterile kits ensure the sample never contacts open air during collection.

Pre-Procedure Preparation

Patients should avoid blood-thinning medications including aspirin and ibuprofen for 7 days before the procedure. Alcohol consumption should stop 48 hours prior to optimize platelet quality. Arriving well-hydrated improves blood draw efficiency and growth factor concentration in the final serum. No fasting is required, and eating a light meal 2 hours before the appointment is recommended.

Stage 2: Centrifugation and Growth Factor Extraction

The collected blood enters a Class III medical-grade centrifuge operating at 3,000-4,000 RPM for 12-15 minutes. This high-speed rotation separates blood into three distinct layers: red blood cells at the bottom, a buffy coat containing concentrated platelets and white blood cells in the middle, and platelet-poor plasma on top. The target layer, the platelet-rich concentrate, contains growth factor concentrations 5-8 times higher than baseline blood levels.

Korean clinics using Eternal Booster technology add a proprietary ampoule during processing that enhances growth factor activation. The closed-system design means the entire separation occurs within a sealed cartridge, maintaining sterility throughout. Temperature-controlled chambers keep the sample at 20-24 degrees Celsius, the optimal range for preserving bioactive proteins. Processing yields approximately 3-5ml of concentrated regenerative serum from the original 20-30ml blood sample.

Stage 3: Topical Anesthesia and Injection Preparation

While centrifugation proceeds, a topical numbing cream containing 4-5% lidocaine is applied to the treatment area. This numbing phase lasts 20-30 minutes, overlapping with the blood processing time so no additional waiting is required. For facial treatments, the cream covers the full face or targeted zones such as nasolabial folds, under-eyes, or forehead. Scalp treatments require a different application technique using a parting method to reach the skin surface directly.

Comfort Measures During Treatment

Modern stem cell procedures in Korea use 30-32 gauge micro-needles that minimize sensation during injection. Vibration anesthesia devices applied adjacent to injection sites further reduce discomfort by activating nerve gate control mechanisms. Most patients rate pain at 2-3 on a 10-point scale with proper numbing. Clinics offering Revinas technology combine the regenerative injection with radiofrequency energy delivery, requiring no additional anesthesia beyond the topical cream.

Stage 4: Reinjection and Immediate Aftercare

The concentrated growth factor serum is reinjected using one of three delivery methods depending on the treatment area. Direct micro-injection places precise 0.05-0.1ml deposits at 1cm intervals across the treatment zone. Micro-needling delivery uses a motorized device at 0.5-1.5mm depth to create thousands of micro-channels that absorb the serum. The third method combines injection with device-assisted delivery such as LDM ultrasound for enhanced penetration. RE:BERRY utilizes all three methods based on individual treatment protocols.

Immediately after injection, mild redness and pinpoint swelling appear at treatment sites, lasting 4-24 hours. A soothing LED light therapy session of 10-15 minutes follows to reduce inflammation. Patients receive written aftercare instructions specifying no makeup for 12 hours, no swimming or sauna for 48 hours, and sun protection with SPF 50 for 2 weeks. The total time from blood draw to walking out of the clinic spans 60-90 minutes.

Post-Procedure Timeline and Follow-Up Sessions

Initial skin texture improvements become noticeable within 7-14 days as growth factors stimulate collagen synthesis. Peak results develop over 4-8 weeks as new collagen fibers mature and skin elasticity increases. A single-session Ever Youth protocol starts at ₩1,990,000 ($1,530 USD), while comprehensive 4-session Eternal Youth programs at ₩5,290,000 ($4,069 USD) deliver cumulative regenerative benefits over 3-6 months. Moon SH et al. demonstrated that multi-session autologous protocols increased dermal thickness by 22% at 6-month follow-up. Moon SH et al. J Cosmet Dermatol. 2022;21(8):3412-3420. doi:10.1111/jocd.14987

Frequently Asked Questions

What happens during a Stem Cell session?
A stem cell session follows 4 sequential stages completed in 60-90 minutes. The physician draws 20-30ml of blood, centrifuges it at 3,000-4,000 RPM for 12-15 minutes, extracts concentrated growth factors at 5-8 times baseline concentration, and reinjects the serum into target areas using micro-needles or device-assisted delivery under topical anesthesia.
How long does the procedure take?
The complete stem cell procedure takes 60-90 minutes from blood draw to completion. The blood collection requires 3-5 minutes, centrifugation runs 12-15 minutes, topical numbing needs 20-30 minutes (applied during processing), and the injection phase lasts 15-25 minutes depending on the number of treatment zones targeted.
Does Stem Cell hurt?
Most patients rate stem cell injection pain at 2-3 on a 10-point scale with proper topical anesthesia. A 4-5% lidocaine cream applied for 20-30 minutes numbs the treatment area before injection. The 30-32 gauge micro-needles used are thinner than standard injection needles, and vibration anesthesia devices further reduce sensation during the procedure.
How many sessions do I need?
Most treatment plans include 1-4 sessions spaced 3-4 weeks apart depending on the regenerative goal. A single Ever Youth session at ₩1,990,000 ($1,530 USD) addresses mild skin aging, while the 4-session Eternal Youth program at ₩5,290,000 ($4,069 USD) targets advanced collagen loss. Maintenance sessions every 6-12 months preserve cumulative results.
What technology is used?
Korean stem cell clinics use KFDA-approved Class III centrifuges operating at 3,000-4,000 RPM with temperature-controlled chambers at 20-24 degrees Celsius. Eternal Booster ampoule technology enhances growth factor activation during processing. Delivery systems include motorized micro-needling devices, direct micro-injection, and Revinas radiofrequency-assisted penetration with 6,000-12,000 shot protocols.
What should I avoid before a stem cell procedure?
Stop blood-thinning medications including aspirin and ibuprofen for 7 days before your appointment. Avoid alcohol for 48 hours prior to optimize platelet quality and growth factor concentration. Drink at least 1.5 liters of water the day before to ensure efficient blood collection and higher serum yield from centrifugation.
How soon can I return to daily activities after treatment?
Most patients resume normal activities within 24 hours, with 90% of visible redness subsiding by the 12-hour mark. Avoid applying makeup for 12 hours, swimming or sauna exposure for 48 hours, and intense exercise for 72 hours post-procedure. Sun protection with SPF 50 is required for 14 days to protect treated skin during the initial healing phase.

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