What Is Dr CYJ Hair Filler? A Complete Guide to Scalp Rejuvenation

Dr CYJ Hair Filler is a medical injectable treatment designed to help with hair thinning and hair loss.

It’s not a traditional “dermal filler” for wrinkles — rather, it’s formulated to nourish the scalp and stimulate follicles using a blend of:

  • Peptides — short chains of amino acids that help signal follicle cells to grow, nourish, and strengthen hair.
  • Hyaluronic acid (0.7%) — hydrates the scalp and supports peptide delivery and absorption.

How It Works

  • Micro-injections into the Scalp: A clinician makes tiny injections across areas of thinning hair.
  • Slow Release of Actives: The patented formula slowly releases peptides over days to weeks after treatment, continually stimulating the scalp environment.
  • Boosts Circulation & Follicle Activity: Active peptides support blood flow, follicle nourishment, and cell signaling for hair growth.
  • Strengthens & Revitalizes: Over time, the environment around follicles becomes more supportive of thicker, stronger hair production.

Who It’s For

Best suited for:

  • Men and women experiencing non-scarring hair thinning or early hair loss (like androgenetic alopecia).
  • People with weak, fine, or thinning hair who want increased density and strength.
  • Those with stress-related shedding or seasonal hair loss.
  • People wanting a non-surgical option or complement to other treatments.
  • Post-hair transplant support to help follicles settle and survive.

Who It’s Not For

  • Anyone with scarring alopecia (where follicles are destroyed). Hair fillers won’t regrow hair where follicles are gone permanently.
  • Pregnant or breastfeeding individuals.
  • Active scalp infections or inflammation at the treatment area.
  • People with known allergies to hyaluronic acid or peptide components.

Common Fears & Concerns

"Does it hurt?"

It’s usually minimally uncomfortable.

Side effects?

Mild, rare and temporary — including, tenderness, slight swelling, or minor itchiness at injection sites.

Is it safe?

When performed by a qualified medical professional it’s considered safe and with low downtime.

When Results Appear

  • After a few sessions: Many clinics report patients noticing reduced shedding after 2–3 sessions.
  • 4–6 weeks: Improvement in hair strength and thickness often begins.
  • 8–12+ weeks: Visible increases in density and growth are more common as the hair growth cycle continues.

Aftercare Tips

  • Avoid washing hair for at least 24 hours after treatment.
  • Avoid touching or massaging the treated scalp for 24–48 hours.
  • Avoid saunas, pools, intense workouts, heavy sweating for ~48 hours.
  • Scrub or exfoliate the scalp right after injections.
  • Use harsh chemical treatments (e.g., bleaching) immediately after.