Exosomes, what are they?

Exosomes, a revolution in cellular regeneration

What is an exosome?

Exosomes are tiny biological messengers that our cells naturally produce.

Rich in proteins, growth factors, and nucleic acids, they transmit valuable information between cells to stimulate repair, reduce inflammation, and boost tissue regeneration.

In short: exosomes are your skin's secret language for staying beautiful, healthy, and radiant.

Structure of Exosomes

Exosomes are small extracellular vesicles with a diameter between 30 and 150 nanometers, secreted by virtually all living cells. Their structure is specific and essential for their function as biological information carriers.

Bilayer lipid membrane

Composition: Like cell membranes, the exosome membrane consists of a double layer of lipids (mainly phospholipids, cholesterol, and sphingolipids).

Function: This membrane protects the exosome's internal content and facilitates fusion with other target cells to deliver its "biological message."

Specific membrane proteins: Characteristic proteins are also integrated into this membrane, such as:

Tetraspanins: CD9, CD63, CD81 (classic exosome markers)

Fusion proteins: Annexins, flotillins

Adhesion molecules: Integrins

Internal content (molecular cargo)

Inside exosomes, a very rich and varied set of biological molecules can be found:

RNA:

• MicroRNAs (miRNA): play a role in regulating gene expression
• Messenger RNAs (mRNA): can be translated into proteins in target cells
• Long non-coding RNAs and other small RNA molecules

Proteins:

• Signaling proteins
• Cell stress proteins (like HSP70, HSP90)
• Metabolic enzymes

Specific lipids:

• Ceramides
• Sphingomyelin
• Cholesterol

These elements allow exosomes to modulate the activity of recipient cells and influence many biological processes (regeneration, inflammation, immunity, etc.).

The role of exosomes

Exosomes play a key role in intercellular communication. They allow cells to exchange essential information to:

• Regulate immune responses
• Stimulate tissue repair
• Modulate inflammation
• Transmit growth or defense signals

They are, in a way, "biological messengers" that help maintain the balance and health of tissues.

Why are exosomes a revolution in aesthetic medicine?

Deep regeneration: Exosomes support the natural production of collagen and elastin, key elements for youthful and toned skin.

Accelerated repair: Ideal after treatments like microneedling, laser, or peels, they help the skin recover faster and reveal its full radiance.

Natural anti-inflammatory: They soothe redness, reduce irritation, and optimize skin comfort.

Safe and natural innovation: Derived from advanced biotechnology, exosomes are 100% biocompatible and respectful of your skin's natural balance.

How is exosome applied in mesotherapy?

Skin preparation before any application:

• The skin is carefully cleaned and disinfected.
• An anesthetic cream can be applied for more comfort if necessary (especially in the case of multiple injection techniques).

Exosome administration methods

Several techniques exist depending on the indication and chosen protocol:

Mesotherapy by micro-injections

Using a very fine needle (or a mesotherapy gun), superficial micro-injections are made into the dermis.

The exosome-based product is injected in small quantities over the entire area to be treated (face, neck, décolleté, scalp, etc.).

Associated microneedling

A microneedling pen or micro-needle roller is used.

The micro-perforations created allow the exosomes deposited on the skin's surface to penetrate deeply.

This method is particularly used to maximize absorption without direct injection.

Napping technique

The exosome is applied directly in a thin layer to the skin, sometimes combined with slight mechanical abrasion or after a gentle peel to improve skin absorption.

Areas treated by exosomes

• Exosomes in mesotherapy can be used on:
• The face (wrinkles, loss of elasticity, dull complexion)
• The neck and décolleté
• The scalp (to stimulate hair growth)
• Certain fragile body areas (scars, recent stretch marks)

Frequency of sessions

In general, it is recommended to start with a course of 3 to 4 sessions, spaced 2 to 4 weeks apart.

Then, a maintenance treatment every 3 to 6 months is often advised depending on the skin's needs.

Exosomes: for whom?

For those who wish to preserve their skin's youth.

To improve the radiance, elasticity, texture, and firmness of the face.

To support and maximize the results of professional aesthetic treatments.

Exosomes currently represent one of the most promising innovations for those who wish to offer their skin natural and effective regeneration.