Science

The melanocyte, and why pigmentation comes back.

Hyperpigmentation is not a stain on the surface. It is a pigment cell that keeps being told to work. Cyspera was built around that cell, by the team that first stabilized cysteamine for the skin.

Last updated October 2026 · 7 min read

The melanocyte

One cell sets the color of your skin.

Melanocytes sit in the deepest layer of the epidermis. They make melanin, pack it into small granules, and pass it up through long arms called dendrites to the skin cells above. That pigment is protection: it shields the cells from light.

In healthy skin, the melanocyte makes pigment on demand, then slows down. Hyperpigmentation begins when it stops slowing down.

  • 1 : 36One melanocyte supplies pigment to around 36 surrounding skin cells.
  • Same countEvery skin tone has roughly the same number of melanocytes. Tone depends on how much melanin they make, and which kind.
  • ~1 monthThe time it takes surface cells to renew. Pigment already delivered fades only as those cells turn over.
Keratinocytes Melanocyte Melanin, delivered to the cells Basal layer
Schematic, not to scale.
Why it comes back

Hyperpigmentation is a multi-driver condition, not a single pathway problem.

Most products treat dark patches as a pigment problem. The research describes a loop: triggers alert the skin, the skin answers with low grade inflammation, and that inflammation keeps the melanocyte switched on. Quiet one link and the other two restart it.

1Triggers 2Chronicinflammation 3Pigmentoverdrive

Espósito et al. Update on Melasma, Part I: Pathogenesis. Dermatology and Therapy, 2022;12(9):1967 to 1988.

Exposome and systemic triggers

What happens: Daily UV and visible light, pollution and hormonal or metabolic changes cause micro injury and weaken the skin barrier.
Key signals: UV and visible light, particulate matter and oxidative stress, hormonal modulation.
Why it matters: The skin cells read this as danger and start sending signals.

Low grade chronic inflammation

What happens: Signaling molecules and oxidative stress keep a quiet, constant inflammation running in the epidermis.
Key signals: IL-1, TNF-α, PGE2, endothelin-1, α-MSH.
Why it matters: These signals push pigment production up and make melanocytes more responsive.

Melanogenesis hyperactivation

What happens: Melanocytes become primed: it takes less and less to switch them on.
Why it matters: While the inflammation persists, pigment is made faster than the skin can clear it. That is hyperpigmentation.

This is why a single active rarely holds the result. It quiets one driver while the other two restart the loop.

Cysteamine

A molecule the body already makes.

Cysteamine is an aminothiol the body produces on its own. It modulates excess pigment production at several steps rather than one, and it helps restore the antioxidant balance that pigment flares depend on. It is the core of every Cyspera correction step.

Made by the body

An aminothiol produced naturally in human cells, not a synthetic bleaching agent.

Several steps, not one

Acts at more than one point of melanin production, so the melanocyte has fewer ways around it.

Antioxidant balance

Supports the skin's own antioxidant defenses, which drop during pigment flares.

Short contact, then rinsed

Cysteamine works fast. A brief contact time, then rinsing, keeps it comfortable through months of use.

Studied in melasma and other forms of hyperpigmentation, with a tolerability suited to repeated cycles and maintenance. Data on file.

Why Cyspera

The team that put cysteamine on the skin.

First

To stabilize cysteamine

Cysteamine is unstable in a formula. Scientis, in Geneva, was the first to stabilize it for use on the skin.

Patented

The cysteamine complex

The complex at the heart of Cyspera is patented, not a generic ingredient.

Geneva

Made where it was developed

Formulated and produced by the people who developed it.

The Cyspera approach

Three actives, one for each driver.

A multi pathway platform: each active is matched to one point of the cycle, so the loop is addressed from three sides at once.

Tyrocutin

Driver 1, triggers · Total Skin

Oral. A blend of plant derived bioactives that supports the body's own regulation of pigment signaling, and its antioxidant defenses against UV induced oxidative stress.

See Total Skin
Isobionic-amide

Driver 2, inflammation · Intensive

From plants used in traditional African medicine, studied for its soothing and antioxidant properties. Targets the low grade inflammation behind persistence and recurrence, and supports barrier recovery.

See Intensive
Cysteamine

Driver 3, pigment overdrive · Intensive and Sensitive

Modulates excess melanin production at several steps, with a tolerability suited to repeated cycles and long term maintenance.

See the protocols

Data on file.

Total Skin is a first in class oral solution for pigment correction. It addresses pigment directly, it helps prevent the triggers that cause excess pigment in the skin, and it supports repair.

Dr Rawn Bosley, MD, board certified dermatologist · from the Cyspera education series
Proof

What it looks like on skin

Melasma on the face, before and after five weeks of Cyspera Total Skin
BeforeAfter
Melasma · Total Skin · 5 weeksUnretouched, standard lighting. Individual results vary.
Senile lentigo, before and after twelve weeks of Cyspera Intensive
BeforeAfter
Senile lentigo · Intensive · 12 weeksUnretouched, standard lighting. Individual results vary.
Post acne hyperpigmentation, before and after four weeks of Cyspera Intensive
BeforeAfter
Post acne hyperpigmentation · Intensive · 4 weeksUnretouched, standard lighting. Individual results vary.
Melasma, before and after thirteen weeks of Cyspera Total Skin
BeforeAfter
Melasma · Total Skin · 13 weeksUnretouched, standard lighting. Individual results vary.
Questions

The science, in plain words

Is cysteamine a bleaching agent?

No. It does not work by damaging the pigment cells. It reduces how much excess pigment they produce, so your natural tone stays and only the excess fades.

How is it different from hydroquinone?

Hydroquinone blocks one step of pigment production and is used in short courses with breaks. Cysteamine is a molecule the body already makes, acts on several steps, and is used daily for sixteen weeks, then as maintenance.

Why is the correction step rinsed off?

Cysteamine works fast and oxidizes in contact with air. A short contact time, then rinsing, gives the skin what it needs while keeping tolerance high over months.

Why does it have a scent?

Cysteamine is a sulfur molecule, and sulfur has a scent. It fades once the product is rinsed.

Why add an oral step?

Part of the loop starts inside: oxidative stress and inflammation that a cream cannot reach. Total Skin works on that side of the cycle, which is what changes how often pigmentation comes back.

Is it suitable for every skin tone?

Cyspera is formulated for all skin tones. Deeper skin is more prone to marks left by irritation, so build the contact time slowly and keep other actives out of the same evening.

Find where your skin sits in the cycle.

Nine questions, two minutes, no photo.

Education

Read next

Infos /

How Does Cysteamine Work? The Science, the Studies, and How It Compares to Hydroquinone

Inside the Melanocyte · Chapter 3 of 4 By the Cyspera Science TeamScientific review: Camilla Massironi, Product Development, Scientis8 min...
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What Wakes Up Your Melanocytes? The Hidden Triggers Behind Stubborn Dark Spots

Inside the Melanocyte · Chapter 2 of 4 By the Cyspera Science Team Scientific review: Camilla Massironi, Product Development, Scie...
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What is the difference between melanin and melanocytes?

Inside the Melanocyte · Chapter 1 of 4 By the Cyspera Science Team Scientific review: Camilla Massironi, Product Development, Sci...