Sodium hyaluronate is the sodium salt of hyaluronic acid. Naturally present in the skin, it plays a key role in hydration, elasticity, and overall skin comfort.
 In cosmetics, its effects vary depending on its molecular weight, which is why it is important to distinguish between high and low molecular weight forms.
🔹 Sodium Hyaluronate – High Molecular Weight (HMW)
Main action: surface hydration and film-forming effect

• Forms a non-occlusive protective film on the skin surface
• Reduces transepidermal water loss (TEWL)
• Provides an immediate smoothing effect
• Improves skin comfort and suppleness
• Delivers a short-term visible plumping effect

➡️ Ideal for instant hydration and immediate sensory benefits.
🔹 Sodium Hyaluronate – Low Molecular Weight (LMW)
Main action: deep hydration and biological activity

• Penetrates more easily into the superficial layers of the epidermis
• Stimulates the skin’s natural hydration mechanisms
• Helps improve skin elasticity and firmness
• Provides longer-lasting hydration
• Particularly suitable for anti-aging and repairing formulations

➡️ Acts as an internal hydration booster.
➡️ Combining HMW and LMW sodium hyaluronate in the same formula allows for multi-level hydration, delivering both immediate and long-lasting effects.

High molecular weight

• Instant moisturizing treatments
• Smoothing and plumping products
• Soothing and protective care
• “Glow effect” serums and creams

Low molecular weight

• Anti-aging treatments
• Intensive hydrating serums
• Repairing care
• Products targeting skin elasticity and density