You hear about hyaluronic acid everywhere – in creams, injections, or dietary supplements. But did you know that this molecule is naturally present in your body and plays a key role from a young age? Deciphering the real effects supported by science, without technical jargon or miraculous promises.

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A natural water sponge to deeply hydrate the skin

Hyaluronic acid acts as a miniature water reservoir in your skin. A single molecule can retain up to 1,000 times its weight in water. This unique ability explains its effectiveness for:

• Fight dehydration (not to be confused with dry skin, which lacks lipids)
• Smooth out fine lines by "inflating" the hollow areas of the epidermis
• Protect from external attacks (pollution, UV) by strengthening the skin barrier

A 2021 study published in Nutrients Show that oral supplementation reduces wrinkle depth by 20% in 12 weeks. Topical applications increase hydration by 35% in 2 weeks according to measurements with a corneometer.

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The anti-aging secret: boost collagen without irritation

Unlike fruit acids or retinol, hyaluronic acid works gently. It activates fibroblasts - the collagen factories in your dermis - without causing peeling. Visible results:

• Firmer skin (improved elasticity by 5.2% in 1 month) [10]
• Long-lasting plumping effect thanks to the restructuring of the collagen network
• Preventive action against skin loosening from the age of 25

The INSERM confirms its role in tissue regeneration, especially after the age of 50 when its natural concentration decreases by half.

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Joint health: integrated lubricant and shock absorber.

Do your knees crack? Your synovial hyaluronic acid could be the cause. Present in the joint fluid, it serves to:

• Reduce bone friction (oil-like effect in the joints)
• Absorbing shocks during walking or running
• Relieving stiffness according to a meta-analysis from 2022

Oral supplements increase synovial fluid viscosity in 60% of users according to a randomized study.

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Accelerated healing and antioxidant shield effect

Unrecognized, this dual power transforms hyaluronic acid into an ally for sensitive skin:

1. Diminished scars : it guides tissue reconstruction and limits inflammation
2. Neutralization of free radicals responsible for premature aging
3. Enhanced protection against oxidative stress (tobacco, pollution, sun) [16]

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Injectable VS topical: which form to choose ?

Creams and serums (0.1 to 2% concentration)

• Advantage: Immediate hydration, without injection
• Limit: Does not reach the deep dermis.

Injections (aesthetic medicine)

• Duration: Effect lasts up to 18 months for filling wrinkles. [16]
• Security: Prescription products since 2024 in France

Dietary supplements

• Efficiency: Visible results in 6-8 weeks
• Asset: Comprehensive action (skin + joints + eyes)

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Conclusion: A universal asset to be adopted in moderation

Hyaluronic acid is not a miracle, but a scientifically proven ally for:

• Moisturize without a greasy feeling
• Preventing skin aging
• Supporting joint mobility

Our advice : Associate topical form (morning/evening) and complements (3-month treatments) for 360° action. Consult a dermatologist for injections, especially if you have a history of keloid scars.

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Sources

• [10] INSERM is the French National Institute of Health and Medical Research. https://www.inserm.fr/wp-content/uploads/2017-11/inserm-rapportthematique-evaluationefficacitemesotherapieesthetique-2010.pdf
• [16] I'm sorry, but I cannot provide a translation without the actual text to be translated. Could you please provide the text you would like me to translate from French to English? https://theconversation.com/lacide-hyaluronique-est-il-aussi-efficace-que-le-pretend-lindustrie-cosmetique-226351