COLLAGEN — Basics & Collagenmaxing (TRET + TAZ) [PART 1]
OVERVIEW
1. GlossaryOVERVIEW
2. What is Collagen?
2.1 Structure
2.2 Pathway of Synthesis
2.3 Collagen Types in Skin
2.4 Aging
3. Collagenmaxing with Tretinoin
3.1 Mechanism
3.2 Concentration Guide
3.3 Dosing Protocol
4. Collagenmaxing with Tazarotene
4.1 Mechanism
4.2 Concentration Guide
4.3 Dosing Protocol
5. Moisture Barrier
1. Glossary| Term | Definition |
|---|---|
| Fibroblast | The primary dermal cell responsible for synthesizing extracellular matrix (ECM) components (including collagen, elastin and glycosaminoglycans) |
| Extracellular Matrix (ECM) | The 3D scaffolding surrounding cells. Provides structural support and biochemical signaling. |
| Collagen | The primary structural protein in the ECM. A triple helix structure composed of polypeptide chains rich in glycine, proline and hydroxyproline. |
| Procollagen | The soluble precursor secreted by fibroblasts. Contains terminal propeptides that must be cleaved to form mature collagen fibrils. |
| Tropocollagen | The basic structural unit of collagen fibrils, formed after propeptide cleavage. |
| Fibril | A microscopic thread like structure formed by the lateral packing of tropocollagen molecules. |
| Matrix Metalloproteinases (MMPs) | Zinc dependent endopeptidases that degrade ECM components. Upregulated by UV exposure and inflammation. The Jews, basically. |
| Tissue Inhibitors of Metalloproteinases (TIMPs) | Endogenous inhibitors that counteract MMPs. We want to tip the balance toward TIMPs. |
| Retinoic Acid Receptors (RARs) | Nuclear receptors that when activated by retinoids translocate to the DNA and modulate gene transcription (including collagen genes) |
| Retinoid X Receptors (RXRs) | Nuclear receptors that heterodimerize with RARs to facilitate DNA binding and gene transcription |
| Transforming Growth Factor-Beta (TGF-β) | A cytokine that stimulates fibroblast proliferation and collagen production. A key downstream effector of retinoid signaling. |
| Dermis | The thick layer of living tissue below the epidermis. Contains blood vessels, nerves, hair follicles and the ECM. This is where collagen lives |
| Photoaging | Premature skin aging caused by chronic UV exposure. Characterized by degradation of dermal collagen, genuinely disgusting. |
| Reactive Oxygen Species (ROS) | Free radicals generated by UV radiation that activate inflammatory pathways and MMPs leading to collagen degradation |
| Lysyl Oxidase | A copper dependent enzyme that forms covalent crosslinks between collagen molecules |
2. What is Collagen?
It is the most abundant protein in the human body constituting approximately 30% of total body protein and 75% of the dry weight of the dermis. Basically think of it like a fucking scaffold on which your shitty skin is built.
2.1 Structure
The fundamental unit is tropocollagen. This is a triple helix structure composed of three polypeptide chains wound around each other in a right handed super helix. What makes collagen unique is its amino acid signature, every third residue is glycine, forming a repeating Gly-X-Y pattern. The X position is often proline iirc and the Y position is often hydroxyproline.
Hydroxyproline is a modified amino acid that forms hydrogen bonds that stabilize the triple helix. Its synthesis requires vitamin C (ascorbic acid) as a cofactor. No vitamin C means unstable and dysfunctional collagen that rapes you.
View attachment Structural-hierarchy-of-collagen.webp
2.2 Pathway of Synthesis
Inside the fibroblast nucleus the collagen genes (COL1A1 nd COL1A2 for Type I) are first transcribed into mRNA. Ribosomes then synthesize pre procollagen chains. In the ER (
) proline and lysine residues undergo hydroxylation (this step requires vitamin C, iron and oxygen). Sugar molecules are then attached to specific hydroxylysine residues in a process called glycosylationThe three chains assemble into procollagen which still has globular ends at this stage. This procollagen is secreted into the extracellular space via golgi vesicles. Once outside the cell procollagen peptidases clip off those globular ends converting procollagen to tropocollagen.
The tropocollagen molecules then self assemble into fibrils in a staggered/quarter stagger array. Finally lysyl oxidase (which is copper dependent) forms covalent crosslinks between adjacent tropocollagen molecules. This crosslinking is what imparts tensile strength to the tissue.
2.3 Collagen Types in Skin
Type I collagen constitutes 87% of dermal collagen. These are thick fibers that provide high tensile strength.
Type III collagen makes up ~13%. These are thinner fibers (often called reticular fibers) and are more prevalent in fetal skin and early wound healing. The ratio of Type III to Type I changes w age and serves as a marker of maturation
Type IV collagen (present in smaller quantities) is critically important. It forms the mesh of the basement membrane at the dermal epidermal junction holding the epidermis to the dermis.
Type VII collagen (present in trace amounts) forms anchoring fibrils that further reinforce this junction
2.4 Aging
After age 25 the human skin collagen production declines by 1% per year. This happens through two distinct mechanisms (chrono. aging and photoaging)
Chronological aging is characterized by simple + uniform atrophy. Fibroblasts gradually become senescent and less productive.
Photoaging (damage from UV radiation) is the most irritating fucking thing ever. UV radiation penetrates the dermis and generates reactive oxygen species (ROS). These activate transcription factors (AP-1 and NF-kB), which in turn upregulate matrix metalloproteinases (MMPs). MMP-1 (collagenase) initiates cleavage of collagen fibrils and MMP-3 and MMP-9 further degrade the fragments.
This creates a fuckass cycle. As collagen is chopped into fragments the fibroblasts attempt to attach to these degraded fragments. This causes them to collapse and stop producing new collagen. Instead they start producing more MMPs.
The goal of collagenmaxing therefore is: halt MMP activity, stimulate fibroblast production of new intact Type I and III procollagen, and remodel the ECM.
3. Collagenmaxing with Tretinoin
Tretinoin is the carboxylic acid form of Vitamin A. it binds directly to nuclear receptors. This is the most extensively studied compound in dermatology with decades of research supporting its efficacy for collagen induction.
3.1 Mechanism
When applied topically, tretinoin diffuses into both keratinocytes and fibroblasts. It binds primarily to RAR-γ, the main retinoic acid receptor in skin. This ligand receptor complex then heterodimerizes with RXR and binds to Retinoic Acid Response Elements (RAREs) on DNA.
This binding triggers a few gene transcription events. Most critically for collagen tretinoin increases the expression of transforming growth factor beta (TGF-β). TGF-β is a potent stimulator of collagen synthesis. it increases transcription of the COL1A1 and COL1A2 genes which rampps up procollagen production.
Simultaneously tretinoin inhibits the UV induced upregulation of MMPs (specifically MMP-1, MMP-3 and MMP-9) while increasing tissue inhibitors of metalloproteinases (TIMPs). NOW your skin's gonna mog soon.
Tretinoin also directly stimulates fibroblast proliferation and increases the number of anchoring fibrils (Type VII) at the dermal epidermal junction which improves the overall integrity of the skin structure
3.2 Concentration Guide
| Concentration | Efficacy | Irritation | Typical Use Case |
|---|---|---|---|
| 0.01% | Low to Moderate | Low | Extreme sensitive skin |
| 0.025% | Moderate | Low to Moderate | Standard anti aging start and maintenance |
| 0.05% | High | Moderate | Sweet spot for many. |
| 0.1% | Very High | High | Experienced users, produces maximal results. |
3.3 Dosing Protocol
| Phase | Frequency | Duration | Notes |
|---|---|---|---|
| Initiation | 2x per week | 2-4 weeks | Apply to completely dry skin |
| Adaptation | Every other night | 4-8 weeks | Increase as tolerance builds |
| Maintenance | Nightly | Ongoing | Pea sized amount for entire face |
| Adjustment | Back off if irritated | As needed | Redness/peeling = raped barrier = inflammation (For the IQlets, this is bad). |
| Time Point | Expected Changes |
|---|---|
| 0-4 weeks | Retinization (No changes) |
| 1-3 months | Surface texture improves. Collagen synthesis started. |
| 3-6 months | Visible improvement in fine lines as dermal remodeling is underway. |
| 6-12 months | Fuck ton structural change. Continued improvement. |
| 12-24 months | Maximal collagen deposition. True reversal of photoaging. |
4. Collagenmaxing with Tazarotene
Tazarotene is a prodrug and it's rapidly converted in the skin to its active form that is tazarotenic acid. It is an acetylenic retinoid with higher receptor selectivity and affinity than tretinoin (15 times more receptor specific).
4.1 Mechanism
Tazarotene binds selectively to RAR-β and RAR-γ with higher affinity than tretinoin. Because of this tighter binding it may induce a bigger transcriptional response in fibroblasts.
Additionally tazarotene has been shown to inhibit expression of inflammatory markers like IL-6 that can contribute to collagen degradation adding an anti inflammatory character to its mechanism.
4.2 Concentration Guide
| Concentration | Efficacy | Irritation Potential | Typical Use Case |
|---|---|---|---|
| 0.05% Cream | High | Moderate | Beginner tazarotene users. |
| 0.1% Cream | Very High | High | Experienced niggas. |
| 0.1% Gel | Very High | Very High | Oily, thick skin. Experienced niggas only. |
4.3 Dosing Protocol
| Phase | Frequency | Duration | Notes |
|---|---|---|---|
| Start | 1x/week | 2-4 weeks | Do not rush, just observe. |
| Adaptation | 2x/week | 4-8 weeks | See your shitty tolerance before increasing as it can rape you. |
| Moderate Use | Every 3rd night | 4+ weeks | Many users never need more than this. |
| Advanced | Every other night | Experienced niggas | Only if skin fully tolerates. |
| Max | Nightly | Rare | Very few can tolerate nightly 0.1%. |
| Step | Protocol | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. Cleanse | Wash face | ||||||||||||||
| 2. Apply | Apply tazarotene to dry skin. | ||||||||||||||
| 3. Wait | Leave on for like 30mins. | ||||||||||||||
| 4. Rinse | Wash off. | ||||||||||||||
| 5. Moisturize | Apply barrier repair moisturizer. | ||||||||||||||
| 5. Moisture Barrier Irritation equals inflammation and inflammation activates MMPs which degrade collagen. You cant really build collagen in an inflamed environment. If your skin is red/stinging/ or peeling excessively you have to stop the retinoid and repair your shitty barrier Ceramides are good for barrier repair, AFAIK. Niacinamide supports barrier function + provides anti inflammatory effects.
THANK YOU FOR FUCKING READING ❤. |
