ELASTIN

ELASTIN: Discover its benefits in our skincare products!

ELASTICITY ⎪ TIGHTENING ⎪ SMOOTHING

Elastin is a structural protein naturally present in the body's connective tissues. It is responsible for the skin's ability to stretch and return to its original shape after deformation. Alongside collagen, it forms the skin's support network that ensures suppleness, bounce, and youthful skin.

The benefits of elastin go far beyond a simple tightening effect. It works deeply to restore tone, reduce signs of sagging, and sustainably improve skin texture.

What is elastin? Definition and origin

Elastin is a fibrous protein synthesized by fibroblasts, specialized cells in the dermis. Along with collagen and hyaluronic acid, it constitutes one of the three pillars of the cutaneous extracellular matrix.

Its unique molecular structure gives it exceptional elasticity: elastin fibers can stretch up to 150% of their initial length before returning to their shape, a property no other protein in the human body possesses.

From the age of thirty, the natural production of elastin slows down significantly. Sun, pollution, smoking, and hormonal fluctuations accelerate its degradation by specific enzymes called elastases. This phenomenon explains the progressive appearance of fine lines, sagging, and loss of skin bounce.

In cosmetics, the elastin used is generally of marine or plant origin, obtained by enzymatic hydrolysis to produce small fragments capable of penetrating the superficial layers of the epidermis.

Composition and active principles of elastin

Elastin is distinguished by a very particular amino acid composition:

• Valine, glycine, and alanine: major amino acids that provide suppleness and resilience to the fiber
• Desmosine and isodesmosine: amino acids exclusive to elastin, responsible for the cross-links that give it its elasticity
• Hydroxyproline: shared with collagen, it stabilizes the protein's three-dimensional structure
• Tropoelastin: soluble precursor of mature elastin, the most active form used in advanced cosmetic formulas
• Hydrolyzed elastin peptides: low molecular weight fragments ensuring better skin penetration

What are the benefits of elastin?

Clinical studies show that regular topical application of hydrolyzed elastin significantly improves skin bounce and reduces the depth of expression lines after 4 to 6 weeks. Its action is complementary and synergistic with that of collagen.

At the dermal level, elastin peptides stimulate fibroblasts and restart the endogenous production of new elastic fibers, creating a progressive renewal effect of the skin matrix.

• Elasticity and bounce: restores the skin's ability to regain its shape after stretching or expression
• Tightening effect: visibly tightens pores and redensifies skin texture
• Smoothing of fine lines: reduces superficial wrinkles linked to the relaxation of the elastic network
• Hydration: forms a biocompatible film on the skin's surface that limits transepidermal water loss
• Stimulation of fibroblasts: elastin peptides restart the natural synthesis of new fibers in the dermis
• Collagen synergy: strengthens and complements the action of collagen for a denser and more resistant skin matrix

Key points:

• Key bounce protein of the dermis, complementary to collagen
• Stimulates endogenous elastin production by fibroblasts
• Visible tightening and smoothing effect from 4 weeks
• Surface hydration thanks to its film-forming action
• Particularly suitable for mature, sagging, or tired skin

How to use elastin

For topical use, hydrolyzed elastin is incorporated into face, neck, and décolleté care products at concentrations generally between 1% and 5%.

It is found in serums, tightening creams, plumping masks, and eye contour treatments. To maximize its effectiveness, it is applied to clean and slightly damp skin, gently patting to promote the penetration of peptides.

The combination with vitamin C, retinol, or hyaluronic acid enhances its action on skin density and firmness.

⚠️ Note: topical elastin mainly acts on the superficial layers of the dermis. For optimal and lasting results, regular long-term use is recommended.

Precautions for use of elastin

Elastin has an excellent skin tolerance profile. It is generally well accepted by all skin types, including sensitive skin.

Possible side effects:

• Rare skin reactions: in case of very reactive skin, slight transient redness may occur during the first applications. A patch test on the crook of the elbow is recommended.
• Allergies to marine proteins: people allergic to seafood should check the origin of the elastin used in the formula (marine vs. plant) and consult a healthcare professional if necessary.
• Interactions with exfoliating active ingredients: simultaneous use with strong acids (high-concentration AHA/BHA) can alter the integrity of the peptides. It is advisable to alternate applications.

⚠️ In case of doubt about the origin of elastin (marine, bovine, or plant), refer to the product's INCI list or contact the brand directly.

Frequently asked questions about elastin

What is the difference between elastin and collagen?
Collagen provides the skin's structure and mechanical resistance, while elastin gives it its elasticity and bounce. The two proteins work synergistically in the dermis: collagen forms the framework, elastin the springs. Their simultaneous degradation with age explains progressive skin sagging.

Does topical elastin really penetrate the skin?
Hydrolyzed forms and low molecular weight elastin peptides can cross the superficial layers of the epidermis and interact with dermal fibroblast receptors. They act both as film-forming moisturizing agents on the surface and as biological messengers stimulating endogenous elastin production.

At what age should one start using elastin-based skincare?
From the age of thirty, elastin production slows significantly. Skincare enriched with elastin or stimulating peptides is particularly recommended from 35-40 years old, or earlier in case of significant sun exposure, smoking, or hormonal fluctuations.

Is elastin suitable for sensitive skin?
Yes, hydrolyzed elastin is generally very well tolerated by sensitive skin. Its structure, similar to natural skin proteins, makes it a biocompatible active ingredient with low irritating potential.

How long does it take to see the effects of elastin skincare?
A surface tightening and smoothing effect is noticeable from the first applications. Lasting benefits on skin bounce and density are observed after 4 to 6 weeks of regular use.

Sources :
Debelle L. & Tamburro AM. "Elastin: molecular description and function." International Journal of Biochemistry & Cell Biology, 1999.
Rnjak-Kovacina J. et al. "Electrospun synthetic human elastin." Acta Biomaterialia, 2011.
Varani J. et al. "Decreased collagen production in chronologically aged skin." American Journal of Pathology, 2006.