Benefits
Skin Redness Reduction
The 74% redness figure comes from an unpublished in-house survey run by the manufacturer in 50 adults aged 40 to 60 over 60 days at 300 mg a day. Everyone knew they were taking the product, there was no placebo group and the results have never been peer reviewed, so the number cannot show the supplement caused the change. None of the published research cited here tested oral olive leaf extract for skin redness in people, and this is not a treatment for rosacea or any other skin condition.
Itching Reduction
The 76% itching figure comes from the same unpublished manufacturer survey, which had no placebo or comparison group. The only cited research touching itch-related inflammatory signalling is a test-tube study of luteolin in cultured human skin cells. This is not a treatment for eczema or any diagnosed skin disease.
Skin Tightness Reduction
The 72% figure for a tight skin feeling comes from the same unpublished manufacturer survey of 50 people, who rated their own comfort with nothing to compare against. No published study has measured this in people taking the extract by mouth.
Hydration and Skin Quality (manufacturer survey only)
Self-reported improvements in skin hydration and overall skin quality were recorded in the manufacturer's own 60-day survey, which had no placebo group. No published trial has measured skin hydration in people taking this extract by mouth.
User Satisfaction Reported in the Manufacturer's Survey
In the manufacturer's unpublished survey, 80% of the 50 participants said they noticed a visible effect and 78% said they would recommend it. Satisfaction ratings from an unblinded survey with no placebo group are opinions, not clinical findings.
Inflammatory Pathway Effects Seen in Cell Cultures
In cell-culture experiments, olive leaf compounds reduced NF-κB activation and related inflammatory signalling, and olive polyphenols show antioxidant activity in the lab. These are findings in dishes of isolated skin cells. They have not been shown to produce any measured change in a person taking the capsule.
Mechanism of action
NF-κB Pathway Inhibition
NF-κB is a control switch for inflammatory genes. In a 2014 laboratory study, the flavonoid luteolin blocked NF-κB activation in cultured human skin cells. That work was done in a dish using an isolated compound, not in people taking this supplement.
COX-2 Inhibition
COX-2 is an enzyme that makes inflammatory prostaglandins. Olive polyphenols have been reported to lower COX-2 activity in laboratory models, but none of the studies cited here measured COX-2 in anyone taking this extract, and it should not be thought of as working like an anti-inflammatory drug.
PGE₂ Reduction
Prostaglandin E2 is one of the signals involved in inflammatory skin reactions. No study cited on this page measured prostaglandin E2 in people taking Xorialyc, so this is a proposed mechanism rather than a demonstrated effect.
Luteolin and Quercetin Bioactivity
Luteolin and quercetin are flavonoids with anti-inflammatory and antioxidant activity in laboratory studies, and this extract is standardised to contain them. Whether enough of them reaches the skin after a capsule is swallowed has not been tested in any research cited here.
Ortho-Diphenol Antioxidant Activity
Ortho-diphenols such as hydroxytyrosol-type compounds are strong antioxidants in laboratory tests. In a 2025 cell-culture study, oleuropein, hydroxytyrosol and verbascoside together reduced markers of UV damage in cultured skin cells. That was a three-compound combination applied directly to cells, not this product taken by mouth, so it does not show protection of anyone's skin.
Clinical trials
A 60-day in-house consumer survey of Xorialyc at 300 mg a day in 50 adults aged 40 to 60, run by the company that sells the ingredient. It is not published in a peer-reviewed journal, is not indexed on PubMed, and had no placebo or comparison group.
50 adults aged 40 to 60, all of whom took the product; there was no untreated or placebo comparison group.
Participants self-reported 74% less redness, 76% less itching, 72% less skin tightness and about 72% better hydration and skin quality, with 80% saying they saw a visible effect and 78% saying they would recommend it. Because everyone knew they were taking the product and there was no placebo group, these numbers cannot separate the supplement from expectation, seasonal skin changes and normal day-to-day variation.
Laboratory studies of olive polyphenols and inflammatory signalling, mainly NF-κB. These are not clinical trials, and COX-2 and prostaglandin E2 were not measured in any human study cited here.
Cultured human skin cells, plus one study of a topical olive leaf gel applied to wounds in rats. No human studies.
Luteolin reduced NF-κB activation and inflammatory messengers in cultured human skin cells, and an olive leaf gel rubbed onto wounds in rats produced less inflammation and better organised collagen than untreated wounds. These are findings in cells and rodents. They do not show that swallowing an olive leaf capsule changes anything about a person's skin.