Hyaluronic Acid

Hyaluronic Acid is one of the most powerful and well-researched humectants in skincare. It is a naturally occurring polysaccharide found in the skin and connective tissues, known for its remarkable ability to bind and retain water, keeping skin hydrated, plump, and smooth.
INCI Name: Hyaluronic Acid (or Sodium Hyaluronate – the salt form)
Molecular Weight: Varies from 5 kDa (low) to 2000 kDa (high)
Appearance: White powder or clear gel when hydrated
Solubility: Soluble in water
pH: Optimal range ~5.0–7.0
Key Skin Benefits

1. Deep Hydration: Holds up to 1000 times its weight in water, making it one of the most effective moisturizers. Restores moisture balance, improving skin elasticity and smoothness.

2. Plumping and Anti-Aging: Fills fine lines and wrinkles temporarily by plumping the skin from within, promoting a firmer and more youthful appearance.

3. Barrier Support: Strengthens the skin’s protective barrier, reducing transepidermal water loss (TEWL).

4. Soothing and Repairing: Calms irritated or sensitive skin and accelerates wound healing and tissue repair.
   Types of Hyaluronic Acid
   High Molecular Weight (HMW): >1000 kDa – Forms a film on the skin surface, locking in moisture and providing instant smoothness.
   Low Molecular Weight (LMW): 10–300 kDa – Penetrates deeper layers for long-term hydration and elasticity improvement.
   Hydrolyzed Hyaluronic Acid: Very low molecular weight – Absorbs quickly, ideal for lightweight hydration in serums and sprays.
   Sodium Hyaluronate Crosspolymer (Cross-linked): Provides long-lasting hydration, forming a 3D moisture network on the skin.
   
   Compatibility: Works well with glycerin, panthenol, niacinamide, allantoin, aloe vera, and most preservatives
   Safety
   Naturally biocompatible and non-irritating. Suitable for all skin types, including dry, sensitive, and acne-prone skin. Non-comedogenic and hypoallergenic.
   Formulation Tips
   Sprinkle HA powder slowly into water while stirring to prevent clumping. Allow full hydration (2–4 hours or overnight) for a smooth gel texture. To hydrate faster, make a slurry with propylene glycol or glycerin before mixing into water. Combine low and high molecular weight HA for both surface and deep hydration. Maintain pH between 5–7 — lower pH (below 4.0) may cause degradation