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Types of Hyaluronic Acid: Forms & Bioavailability

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

Forms Comparison

FormBioavailabilityBest For
Low-Molecular-Weight HA (< 300 kDa)ModerateOral supplementation — smaller molecules are better absorbed in the gut
High-Molecular-Weight HA (> 1,000 kDa)Low (oral)Topical application — forms a hydrating film on the skin surface
Sodium HyaluronateModerateCommon supplement form — the sodium salt of HA with good stability and solubility
Acetylated HAModerate-HighEnhanced skin penetration — acetyl group improves lipophilicity for topical use

Low-Molecular-Weight HA (< 300 kDa)

Bioavailability: Moderate. Best for: Oral supplementation — smaller molecules are better absorbed in the gut.

High-Molecular-Weight HA (> 1,000 kDa)

Bioavailability: Low (oral). Best for: Topical application — forms a hydrating film on the skin surface.

Sodium Hyaluronate

Bioavailability: Moderate. Best for: Common supplement form — the sodium salt of HA with good stability and solubility.

Acetylated HA

Bioavailability: Moderate-High. Best for: Enhanced skin penetration — acetyl group improves lipophilicity for topical use.

References

  1. (). Oral hyaluronan relieves wrinkles: a double-blinded, placebo-controlled study over a 12-week period. Clinical, Cosmetic and Investigational Dermatology. DOI
  2. (). Ingested hyaluronan moisturizes dry skin. Nutrition Journal. DOI
  3. (). Oral hyaluronan relieves skin dryness and wrinkle: a systematic review. Journal of Cosmetic Dermatology. DOI
  4. (). Clinical effects of dietary hyaluronic acid on dry, rough skin. Aesthetic Dermatology.