Growth factors, PDRN, and 'regenerative' topicals: uses, strength, evidence, and side effects

At a glance

U.S. status

Cosmetic ingredient

Jobs

Photoaging claims · Post-procedure recovery · Skin quality claims

Watch for

Big molecules, small studies, and an origin story (human cells, snails, salmon DNA, exosomes) that does the marketing. Applied to intact skin, most of it stays on the surface.

Access

Almost always premium-priced.

Forms and strengths

Serums with recombinant or cell-derived growth factors
PDRN / polynucleotide creams and serums
Exosome and 'stem cell' products, usually plant-derived or conditioned media

How to use it

If used, apply on clean skin before moisturizer; there is no evidence-based schedule.

Side effects and cautions

Irritation from vehicles
Unknown long-term effects for cell-derived products

Get advice first if

Avoid on open wounds unless a clinician directs it; anyone with a history of skin cancer should ask before using growth-factor products on treated areas.

Regulatory status

Cosmetic ingredients in the U.S. as long as claims stay cosmetic; injectable PDRN and exosomes are a separate regulatory story covered in the procedures desk.

In the trends

Salmon DNA and exosomes are the 2025–2026 buzzwords; the injectable versions carry the real risk.

In our files

Taiwan: Taiwan issues Medicube cream purchase warning

Sources on file

These links support the claims above. Reviewed September 1, 2026. Drug labels link to DailyMed searches so the current label is always one click away.