Lactic acid: Between sporting performance and the secret of radiance for the skin

Lactic acid has a reputation as the ideal culprit. Often pointed out during our muscle pain after intense effort, it is however much more than a simple “waste”. Produced naturally by our muscles, our red blood cells and even our kidneys, this molecule is an essential energy driver.

Better yet, lactic acid has established itself as a flagship active ingredient in dermo-cosmetics. Capable of exfoliating, illuminating and hydrating, it is the ally of skin in search of renewal. So, myth or reality? Dive into the heart of the multiple facets of lactic acid.

What lactic acid really is

Contrary to popular belief, lactic acid is not a toxin, but a natural byproduct of metabolism. It mainly appears during anaerobic glycolysis, a backup process activated when your muscles lack oxygen during sustained exercise.

The biological process in brief:

• Step 1 : The body converts glucose into pyruvate to create energy.
• Step 2 : If oxygen is lacking (intense effort), pyruvate is transformed into lactate (the active form of lactic acid).
• The result : This adaptive mechanism allows your muscles to continue functioning even under high pressure.

Lactic acid and muscle pain: myth or reality?

For decades, it was accused of burning muscles. This is a scientific error. Lactic acid is evacuated by the body very quickly (thanks to the Cori cycle, where it is recycled into glucose by the liver).

Why do you have pain 24 hours after exercise?

The delayed muscle soreness (DOMS) or aches are not due to lactate, but to:

• Of micro-tears muscle fibers.
• A inflammatory reaction necessary for muscle reconstruction.
• Light ones micro-edema intracellular.

Did you know? 70% of lactic acid is eliminated in just 30 minutes after exercise. In one hour, it has completely disappeared from your body

3. Lactic acid in cosmetics: The radiance expert (AHA)

If its effects in sport are internal, its external benefits on the epidermis are spectacular. Member of the family of AHA (Alpha-Hydroxylated Acids), it is particularly prized for its keratolytic action.

Why choose lactic acid rather than glycolic acid?

Although less known than its cousin glycolic acid, lactic acid has a larger molecule. This gives it unique advantages:

• Slow penetration : It acts on the surface without attacking the deeper layers.
• High tolerance : It is ideal for sensitive or reactive skin.
• Humectant properties : Unlike other acids, it helps maintain hydration.

4. The 5 major benefits for your face and body

Incorporating lactic acid into your beauty routine helps transform the texture of the skin:

1. Gentle exfoliation : Eliminates dead cells without mechanical friction.
2. Cellular renewal : Boosts the production of new cells for a fresh complexion.
3. Anti-stain action : Gradually reduces pigmentation and sun spots.
4. Grain smoothing : Reduces irregularities and rough areas.
5. Immediate glow : Revives dull and tired complexions.

5. How to incorporate lactic acid into your routine?

To enjoy these benefits without irritating your skin, choose balanced formulas and follow these expert tips:

• In the evening preferably : Acids can make skin more sensitive to the sun.
• Hydration is key : Always apply a moisturizer after your exfoliant.
• Target the body : Rough areas (elbows, knees, legs) benefit enormously from AHAs.

Our recommendation: Exfoliating Cream with AHAs (Body)

For satiny and unified skin, we have designed the Exfoliating Cream with AHAs SOSKIN. Enriched with lactic acid, it gently exfoliates, hydrates and restores light to the most sensitive skin.

Conclusion: A versatile ally

Lactic acid is far from being an enemy. In sport, it is emergency fuel; in cosmetics, he is an architect of the complexion. By understanding how it works, you can optimize both your physical recovery and the health of your skin.

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