Collagen Explained: What It Does & How to Boost It

Collagen is the most abundant protein in the human body — and the most talked-about ingredient in skincare. It is the structural scaffold that gives skin its firmness, plumpness, and resilience. And from our mid-twenties, we lose approximately 1% of it every year. By the time visible signs of ageing appear — fine lines, sagging, loss of definition — collagen loss has already been underway for years.

Understanding collagen: what it is, why it declines, and how to support its production, is the foundation of any serious anti-ageing skincare strategy.

What Is Collagen?

Collagen is a fibrous structural protein that forms the primary component of the dermis — the deep layer of skin beneath the surface. It works alongside elastin (which gives skin its snap-back elasticity) and hyaluronic acid (which provides hydration and volume) to maintain the skin's architecture.

There are over 28 types of collagen in the body. In skin, Type I and Type III are the most abundant and most relevant to anti-ageing skincare. Type I provides tensile strength and firmness; Type III is associated with skin elasticity and is more prevalent in younger skin.

Why Does Collagen Decline?

Collagen loss is driven by both intrinsic and extrinsic factors:

• Age — collagen synthesis naturally slows from the mid-twenties, with women experiencing a particularly significant decline around menopause (up to 30% loss in the first five years)
• UV exposure — UVA rays penetrate the dermis and directly break down collagen fibres, accelerating photoageing. This is the most preventable cause of collagen loss — read our SPF guide for more
• Glycation — excess sugar in the diet binds to collagen fibres in a process called glycation, making them stiff and brittle
• Smoking — dramatically accelerates collagen breakdown by constricting blood vessels and depleting Vitamin C, which is essential for collagen synthesis
• Chronic stress — elevated cortisol levels inhibit collagen production and accelerate its breakdown
• Poor sleep — collagen synthesis peaks during deep sleep; chronic sleep deprivation significantly impairs skin repair and renewal

Can You Apply Collagen Topically?

This is one of the most common questions in skincare — and the answer requires nuance. Collagen molecules are too large to penetrate the skin's surface when applied topically. Creams and serums containing collagen as an ingredient do not directly replenish the skin's collagen stores.

What they can do is provide surface-level hydration and a temporary plumping effect — which is valuable, but different from stimulating new collagen production.

The most effective topical approach is to use ingredients that stimulate the skin's own collagen synthesis — and there are several with strong clinical evidence behind them.

The Best Ingredients to Boost Collagen Production

Peptides

Peptides are short chains of amino acids — the building blocks of proteins, including collagen. Certain peptides (known as signal peptides) communicate with skin cells to stimulate collagen production. Others (matrikine peptides) mimic the fragments of broken-down collagen, triggering a repair response. For a deep dive into how peptides work, read our Science of Peptides guide.

Noir&Gold™ FirmSilque is formulated with a potent peptide complex specifically designed to signal collagen synthesis and visibly firm the skin with consistent use — making it the cornerstone of any collagen-boosting routine.

Retinol & Retinol Alternatives

Retinol (Vitamin A) is the most extensively researched topical anti-ageing ingredient. It stimulates collagen production, accelerates cell turnover, and has been shown in multiple clinical studies to measurably increase skin thickness and reduce fine lines with consistent use. Introduce gradually — two to three nights per week at a low concentration — to minimise irritation.

For those with sensitive skin or who prefer a gentler approach, Bakuchiol — a plant-derived retinol alternative — has demonstrated comparable collagen-stimulating and anti-ageing benefits in clinical studies, with significantly less irritation. Noir&Gold™ Brightening Essence harnesses Bakuchiol alongside Rosehip Oil to firm, brighten, and even skin tone — delivering retinol-like collagen support in a formula that is gentle enough for daily use and suitable for all skin types, including sensitive skin.

Vitamin C

An essential cofactor in collagen synthesis — the skin cannot produce collagen without it. Vitamin C also neutralises free radicals from UV exposure that break down existing collagen. Noir&Gold™ GlowRefine delivers stabilised Vitamin C in a brightening serum that protects existing collagen while stimulating new synthesis — the ideal morning treatment step for a collagen-focused routine.

Glycine, Proline & Hydroxyproline

These are the primary amino acids that make up collagen. Some advanced skincare formulations include these amino acids topically to provide the raw materials for collagen synthesis, working synergistically with peptides and other actives.

Marine Collagen & Plankton Extracts

While topical collagen cannot penetrate the skin, marine-derived ingredients such as marine plankton extract have been shown to support the skin's own collagen-producing cells (fibroblasts) and improve skin density over time. Noir&Gold™ CoreSilque harnesses Marine Plankton alongside Collagen and Shea Butter in a rich night cream formulated to support skin renewal and firmness while you sleep.

Niacinamide

Beyond its brightening and barrier-strengthening benefits, niacinamide has been shown to stimulate collagen synthesis and improve skin elasticity — making it a valuable supporting ingredient in any collagen-boosting routine.

Your Collagen-Boosting Skincare Routine

Morning

1. Cleanser — Start with a cleanser suited to your skin type. Noir&Gold™ Gentle Cleansing Milk is ideal for dry and normal skin; Noir&Gold™ Clarifying Gel suits oily and combination skin types.
2. Vitamin C Serum — Apply Noir&Gold™ GlowRefine to clean skin. This is your primary collagen-protection and synthesis step — allow to absorb fully before layering.
3. Peptide Serum — Noir&Gold™ FirmSilque delivers signal peptides to stimulate collagen synthesis throughout the day.
4. Collagen Day Cream — Noir&Gold™ PlumpForm is your dedicated daytime collagen moisturiser — formulated to plump, firm, and support collagen structure throughout the day while providing a smooth, nourished base for SPF.
5. SPF 30–50 — The single most important step to prevent collagen breakdown. Non-negotiable, every morning.

Evening

1. Double Cleanse — Begin with Noir&Gold™ Sensitive Skin Oil-To-Milk Cleanser to dissolve SPF and makeup, followed by Noir&Gold™ Gentle Cleansing Milk or Noir&Gold™ Clarifying Gel as your second cleanse.
2. Retinol or Retinol Alternative (2–3x per week) — Use retinol on designated nights, or opt for Noir&Gold™ Brightening Essence (Bakuchiol) as a gentler daily alternative that delivers comparable collagen-boosting benefits without the irritation.
3. Peptide Serum (on non-retinol nights) — Noir&Gold™ FirmSilque alternated with retinol gives your skin collagen-stimulating support every night of the week.
4. Collagen Night Cream — Noir&Gold™ CoreSilque is formulated with Marine Plankton, Collagen, and Shea Butter to deeply nourish and support skin renewal overnight — the ideal final step in a collagen-focused evening routine.

The Complete Collagen Night Routine

For a curated, results-focused approach to overnight collagen support, the Noir&Gold™ Collagen Night Routine Collection Box brings together our most effective evening products in one beautifully presented set. Everything you need for a complete collagen-boosting night routine, in a single luxurious gift-ready box.

Lifestyle Habits That Support Collagen

• Wear SPF daily — UV exposure is the most significant preventable cause of collagen breakdown. Read our SPF guide for everything you need to know.
• Eat collagen-supporting foods — Vitamin C-rich foods (citrus, berries, peppers), bone broth, and protein-rich foods provide the building blocks for collagen synthesis.
• Reduce sugar intake — glycation from excess sugar directly damages collagen fibres. Reducing refined sugar is one of the most impactful dietary changes for skin health.
• Prioritise sleep — collagen synthesis peaks during deep sleep. Aim for 7–9 hours of quality sleep nightly.
• Manage stress — chronic elevated cortisol inhibits collagen production. Stress management practices — exercise, meditation, adequate rest — have measurable benefits for skin health.
• Stay hydrated — collagen fibres require adequate hydration to maintain their structure and function.

Frequently Asked Questions

Do collagen supplements work?

The evidence for oral collagen supplements is growing. Hydrolysed collagen peptides (broken into smaller fragments for absorption) have shown promising results in clinical studies for improving skin elasticity and hydration. They are not a replacement for topical skincare but may provide a complementary benefit.

At what age should I start a collagen-boosting routine?

Prevention is far more effective than correction. Starting with SPF, Noir&Gold™ GlowRefine (Vitamin C), and a peptide serum in your mid-to-late twenties is ideal. Retinol can be introduced from the late twenties onwards — or start with Noir&Gold™ Brightening Essence as a gentler entry point at any age.

How long does it take to see results from collagen-boosting skincare?

Collagen remodelling is a slow process. Most people begin to notice improvements in skin firmness and texture after 8–12 weeks of consistent use. Significant changes in skin density and elasticity typically take 3–6 months. Consistency is everything.

Continue your skincare education: Anti-Ageing Skincare Routine | The Science of Peptides | SPF & Sun Protection