Science Explainer Series

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Skin 101 · Oswego, IL

Not All Collagen Is The Same

Know what's behind the marketing claims

"It builds collagen" gets thrown around a lot — but different collagen types do different jobs in your skin. Here's what each one actually does, and what's behind the marketing claims.

80–85%

Of skin collagen is Type I — strength & firmness

10–15%

Is Type III — repair & healing in young skin

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⚠ Before you start

Collagen induction treatments — microneedling, RF microneedling, lasers, PRP — build results over months, not days, and what's right for your skin depends on your goals, skin type, and history. This page is educational. It's not a treatment plan; that's what a consult is for.

Collagen types guide — Type I, III, IV, VII jobs and what microneedling, RF, CO₂, PRP, and retinoids stimulate

Full depth reference — tap to zoom on mobile, or save for your consult

1Skin 101

The Two That Matter Most

Type I makes up 80–85% of the collagen in your skin — it's the structural steel beam, responsible for strength and firmness. Type III makes up another 10–15% — think of it as the flexible scaffolding laid down early in healing, abundant in young skin. Together they're why "boosting collagen" almost always means boosting these two first.

2Skin 101

Where Each Type Lives & What It Does

80–85% of skin collagen

Type I

Strength, structure, firmness
Found in the epidermis and throughout the dermis
Most heavily targeted by anti-aging treatments

Best for: Anti-aging & firmness goals

Typical use: Primary remodeling target

10–15% of skin collagen

Type III

Repair, healing, early regeneration
Found in the dermis, alongside Type I
Abundant in young, elastic skin

Best for: Healing & early repair signaling

Typical use: Co-stimulated with Type I

Basement membrane

Type IV

Skin architecture, cell communication
Forms the junction between epidermis and dermis
Not a fibril — forms a sheet-like network

Best for: Structural skin architecture

Typical use: Less commonly discussed in marketing

3Skin 101

The Lesser-Known One: Type VII

Found deeper, near the fat layer, Type VII forms anchoring fibrils — the structures that physically attach your skin layers to each other. It's a smaller share of total collagen, but it matters for mechanical stability and skin attachment, which is part of why skin can become more fragile with age even when Type I and III are both present.

4Skin 101

What Actually Stimulates What

Microneedling, RF, lasers, PRP, exosomes, retinoids — they all claim to "build collagen." Here's what the research actually supports for each.

Microneedling

Established

Type I + III

• Controlled micro-injury triggers natural repair
• 3–4 sessions typical, 4–6 weeks apart

Downtime: Minimal downtime

RF Microneedling

Established

Type I + III

• Heat + needling for deeper remodeling
• Histology confirms Type I/III reorganization

Downtime: 1–3 days downtime

CO₂ Laser

Established

Type I + III

• Strongest single-session collagen stimulation
• Best evidence base of the energy devices

Downtime: 5–10 days downtime

PRP

Established

Fibroblast signaling

• Your own platelets, growth factors
• Well-established safety profile
• Often paired with microneedling/RF

Downtime: Minimal to 1–2 days

Exosomes

Emerging

Emerging evidence

• Biologically plausible signaling mechanism
• Controlled human trials still limited
• Regulatory status varies by region

Downtime: Varies by protocol

Retinoids

Established

Type I support

• Boosts fibroblast collagen output
• Slows breakdown of existing collagen
• The only at-home option on this list

Downtime: Adjustment period possible

5Skin 101

How CO₂ and RF Actually Compare

CO₂ laser produces more collagen stimulation per session, but with significantly more downtime (5–10 days vs. 1–3). RF microneedling needs more sessions to get there, but fits into a normal week. Neither is "better" — it depends on your downtime tolerance and goals.

6Skin 101

Be Skeptical of "Instant Collagen" Claims

Collagen remodeling takes weeks to months, not days.
Any treatment promising overnight collagen transformation is overselling what the biology actually supports.

How We Think About It at Hello Gorgeous

Collagen science is genuinely exciting, but it's also genuinely slow — real results come from consistent treatment over months, not a single trendy procedure. We'll always tell you what's well-established versus what's still emerging, so you can choose with clear eyes. Still family-owned, still honest, still in your corner.