ACTIVES · MATERIA №30
Hyaluronic Acid
The molecule that lets skin and joints hold water.
- Family
- actives
- Origin
- Endogenous; produced by fermentation for supplements
- Format
- Serum, capsule or powder
- Best taken
- Topical morning and night; oral daily
Hyaluronic acid is a glycosaminoglycan present throughout connective tissue — skin, joints, eyes. It is the molecular sponge that holds the body's water in the right places.
Endogenous production declines with age. Topical and oral supplementation aim to support the matrix.
How it works in the body
Topically, low-molecular-weight HA penetrates the upper stratum corneum and draws water into the skin. Oral HA appears to support endogenous production and accumulates in skin and joint tissue.
What you can expect
Skin hydration
Holds water in the dermis.
Good for: skin
Joint comfort
Component of synovial fluid.
Good for: longevity
04 — PROTOCOL
Topical: serum applied to damp skin morning and night. Oral: 120–240 mg daily.
05 — SOURCING
Vegan HA from biofermentation is preferable to animal-derived. Multi-molecular-weight serums penetrate at multiple skin levels.
06 — CAUTION
Generally well tolerated topically and orally.
What the studies say
Oral hyaluronic acid has emerged from a curiosity to a moderately well-evidenced ingredient for skin hydration, elasticity and wrinkle depth — multiple recent randomised trials now show measurable improvement against placebo.
Honest caveatEffect sizes are real but modest; HA supplementation is best understood as a maintenance ingredient, not a corrective one.
- 01RCT
Oral administration of hyaluronic acid to improve skin conditions via a randomised double-blind clinical test
Gao Y-R, Wang R-P, et al. · Skin Research and Technology · 2023
“Oral hyaluronic acid significantly improved skin moisture, elasticity and wrinkle scores compared with placebo over the trial period.”
Plain EnglishPlacebo-controlled trial: oral HA improved measured skin hydration, elasticity and wrinkle depth.
- 02RCT
Oral intake of a new full-spectrum hyaluronan improves skin profilometry and ageing: a randomised, double-blind, placebo-controlled clinical trial
Various · European Journal of Dermatology · 2021
“Oral full-spectrum hyaluronan improved skin profilometry parameters associated with ageing compared with placebo.”
Plain EnglishRCT: oral full-spectrum HA improved instrumented skin-ageing measures versus placebo.
- 03RCT
Oral Hyaluronic Acid Supplement: Efficacy in Skin Hydration, Elasticity, and Wrinkle Depth Reduction
Various · PubMed-indexed · 2025
“Oral HA supplementation produced statistically significant improvements in skin hydration, elasticity and wrinkle depth compared with placebo.”
Plain EnglishMost recent RCT replicates hydration, elasticity and wrinkle-depth improvements.
All citations link to PubMed, PubMed Central or the original publisher. We do not reproduce full study text. References last verified by SACRAHAUS editorial.
08 — PRODUCTS
Products with Hyaluronic Acid
08 — PAIRS WELL WITH
Build the stack
SUPPORTS
What Hyaluronic Acid can help with
APPEARS IN THESE RITUALS
Honest answers
- Apply to damp or dry skin?
- Damp. HA is a humectant — without water in the environment it can pull moisture out of the skin.
CONTINUE THE MATERIA