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Ha8.0
Hyaluronic Acid Research
Mostly mechanism / observationalHigh safety
12 peer-reviewed studies
What the evidence says
Mostly mechanism / observational
Most Hyaluronic Acid studies are mechanism or observational rather than RCTs that measure a clinical effect — keep findings provisional.
Most evidence is from high-quality meta-analyses and randomised trials published 2012–2026 with a typical study size of 129 participants.
Based on 12 studies · 6 meta-analyses · 5 RCTs · 48,711 total participants
9 studies in the last 5 years · Latest meta-analysis: 2025
201220192026
1Meta-AnalysisCited 3×n=5,089 · very large study2025
These findings emphasize the sustained efficacy of PRP, particularly when combined with HA, in providing superior long-term pain relief and functional improvement in knee OA compared to other intra-articular injectables, highlighting its potential as a preferred treatment modality.
Gupta N et al. · Journal of orthopaedic surgery and research (2025)
These findings emphasize the sustained efficacy of PRP, particularly when combined with HA, in providing superior long-term pain relief and functional improvement in knee OA compared to other intra-articular injectables, highlighting its potential as a preferred treatment modality.
2Pain and function scoresMeta-AnalysisCited 20×n=9,338 · very large study2024
At a minimum 6-month follow-up, PRP demonstrated significantly improved pain and function for patients with knee osteoarthritis compared with placebo.
Jawanda H et al. · Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association (2024)
The most studied intra-articular injection was HA (40.9%), followed by placebo (26.2%), PRP (21.5%), CS (8.8%), and then BMAC (2.5%).
HA and PRP both led to a significant improvement in pain compared with placebo.
HA, PRP, and BMAC all led to a significant improvement in function scores when compared with placebo.
3Incidence of hyperpigmentationMeta-AnalysisCited 11×n=623 · large study2023
Zhang J et al. · Lasers in medical science (2023)
Huge benefit
← WorseNo effectBetter →
Likely real
In addition, fractional CO2 laser combined with HA dressing therapy had a lower incidence of hyperpigmentation than fractional CO2 laser alone (RR=0.37, 95% CI [0.23, 0.61], P<0.0001).
The level of evidence for outcomes was classified to be low to moderate.
According to our findings, fractional CO2 laser combined with HA dressing is efficacious and safe option for facial atrophic acne scars.
6Skin density and textureRCTCited 4×n=87 · small study2024
Therefore, the ability of supplementation with HA to improve the effects on investigated skin parameters beyond the supplementation of collagen alone cannot be confirmed.
Žmitek K et al. · Nutrients (2024)
The results showed beneficial effects of both test products, with notable enhancements in dermis density, skin texture, and a reduction in the severity of wrinkles.
In contrast, the administration of either of the products did not yield any significant impacts on skin elasticity or hydration.
Observation of the investigated skin parameters did not show superior effects of the addition of hyaluronic acid (HA) to collagen.
8Skin health conditionsRCTCited 12×n=129 · medium study2023
This study provides direct evidence supporting the clinical efficacy of oral intake of HA in promoting skin health.
Gao YR et al. · Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI) (2023)
This study provides direct evidence supporting the clinical efficacy of oral intake of HA in promoting skin health.
The findings of this analysis align with existing literature, underscoring the potential of oral HA supplementation as a valuable component in anti-aging and skincare regimens.
Amin P et al. · Journal of drugs in dermatology : JDD (2025)
The meta-analysis revealed statistically significant improvements in skin hydration, elasticity, and wrinkle depth following oral HA supplementation.
Although the effects of oral HA on skin firmness, wrinkle volume, and transepidermal water loss were not statistically significant, a general trend of improvement was observed in these parameters.
The findings of this analysis align with existing literature, underscoring the potential of oral HA supplementation as a valuable component in anti-aging and skincare regimens.