When the skin’s outer layer is stripped, a special form of hyaluronic acid in tiny capsules helps the skin hold onto much more water than regular hyaluronic acid.
Scientific Claim
Liposomal hyaluronic acid (LPS-HA) is associated with a 96.99% increase in skin hydration measured by corneometry after nine tape-strippings in 20 healthy adult women aged 20–50, compared to a 36.31% increase in untreated control skin, suggesting greater acute moisturizing efficacy under barrier-disrupted conditions.
Original Statement
“In a 20-subject clinical study, corneometric hydration with LPS-HA was higher than that of control (96.99% vs. 36.31%; RM-ANOVA, p<0.001).”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design supports claim
Appropriate Language Strength
association
Can only show association/correlation
Assessment Explanation
The study used a within-subject design with blinded measurements and statistical analysis, but lacked randomization and blinding confirmation, so causation cannot be inferred. 'Associated with' correctly reflects the observational nature of the human data.
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.
Systematic Review & Meta-AnalysisLevel 1aWhether LPS-HA consistently produces greater skin hydration than conventional HA across diverse populations, formulations, and durations.
Whether LPS-HA consistently produces greater skin hydration than conventional HA across diverse populations, formulations, and durations.
What This Would Prove
Whether LPS-HA consistently produces greater skin hydration than conventional HA across diverse populations, formulations, and durations.
Ideal Study Design
A meta-analysis of 10+ double-blind, randomized, placebo-controlled trials in adults aged 25–65 with dry skin, comparing topical LPS-HA (1% w/v, daily for 8 weeks) vs. conventional HA or placebo, with primary outcome: change in corneometer readings at week 8, secondary: TEWL and patient-reported dryness.
Limitation: Cannot establish biological mechanisms or long-term effects beyond the included trials.
Randomized Controlled TrialLevel 1bWhether LPS-HA causes greater skin hydration than conventional HA under controlled conditions.
Whether LPS-HA causes greater skin hydration than conventional HA under controlled conditions.
What This Would Prove
Whether LPS-HA causes greater skin hydration than conventional HA under controlled conditions.
Ideal Study Design
A double-blind, randomized, placebo-controlled trial with 100+ healthy adults aged 25–55, applying LPS-HA (1%) vs. conventional HA (1%) vs. vehicle on matched forearm sites, twice daily for 4 weeks, measuring corneometry, TEWL, and stratum corneum water content via bioimpedance at baseline, week 2, and week 4.
Limitation: Cannot prove long-term anti-aging effects or molecular mechanisms.
Prospective Cohort StudyLevel 2bWhether regular use of LPS-HA correlates with sustained improvement in skin hydration over months.
Whether regular use of LPS-HA correlates with sustained improvement in skin hydration over months.
What This Would Prove
Whether regular use of LPS-HA correlates with sustained improvement in skin hydration over months.
Ideal Study Design
A 6-month prospective cohort of 200 adults using LPS-HA daily vs. non-users, with monthly corneometry and skin barrier assessments, adjusting for age, environment, and skincare habits.
Limitation: Cannot rule out confounding by lifestyle or product use patterns.
Cross-Sectional StudyLevel 3Whether users of LPS-HA products report higher perceived hydration than non-users.
Whether users of LPS-HA products report higher perceived hydration than non-users.
What This Would Prove
Whether users of LPS-HA products report higher perceived hydration than non-users.
Ideal Study Design
A survey of 500+ consumers using LPS-HA-containing products vs. HA-only or non-users, measuring self-reported skin hydration, satisfaction, and usage duration, with objective corneometry on a subsample.
Limitation: Cannot determine causality or isolate LPS-HA effect from other ingredients.
In Vitro Permeation StudyLevel 5In EvidenceWhether LPS-HA penetrates skin-mimetic membranes more effectively than conventional HA.
Whether LPS-HA penetrates skin-mimetic membranes more effectively than conventional HA.
What This Would Prove
Whether LPS-HA penetrates skin-mimetic membranes more effectively than conventional HA.
Ideal Study Design
A standardized Franz cell study using Strat-M® or human cadaver skin, comparing LPS-HA (1%) and HA (1%) with quantification of HA permeation via HPLC over 24h, repeated across 10+ independent batches.
Limitation: Does not reflect live skin biology, immune response, or long-term hydration.
Evidence from Studies
Supporting (1)
Liposomal Hyaluronic Acid Enhances Skin Permeation and Hydration: Evidence from In Vitro, Ex Vivo, and In Vivo Studies
The study tested the same cream with liposomal hyaluronic acid mentioned in the claim and found that it made skin 96.99% more hydrated after stripping the surface layer — way better than untreated skin — just like the claim says.