Oxyresveratrol on Acne vulgaris
Acne (Acne vulgaris) is a chronic inflammatory skin disease caused by excessive sebum secretion, follicular hyperkeratinization, Cutibacterium acnes (formerly Propionibacterium) proliferation, and inflammatory reactions.
Medications currently used to treat acne, include topical retinoids (tretinoin, adapalene, tazarotene, trifarotene), benzoyl peroxide, hormonal agents, topical antibiotics (clindamycin, erythromycin, minocycline), and oral antibiotics
- Long-term or excessive use of antibiotics and topical agents can lead to the emergence of antibiotic-resistant bacteria and damage to the skin barrier.
Furthermore, adverse effects such as skin dryness, pruritus (itching), irritation, desquamation (peeling), erythema (redness), and contact dermatitis are observed.
Before
After
Antibacterial activity :
Oxyresveratrol is an excellent bactericide.
- Oxyresveratrol demonstrated strong antibacterial activity with inhibition zones of 16.37–31.90 mm and minimum inhibitory concentrations ranging from 0.01–0.12 mg/mL, exhibiting bactericidal effects within 24 hours.
Significant growth inhibitory effects were observed against the tested bacteria within 24 hours at all extract concentrations. Bactericidal activity increased with an increase in extract concentration and exposure duration.
- The minimum inhibitory concentration (MIC) of pure oxyresveratrol against Propionibacterium acnes (also known as Cutibacterium acnes) ranges from 0.01 to 0.12 \ mg/mL.
These findings suggest that purified oxyresveratrol is a natural alternative to conventional antimicrobial and anti‑inflammatory agents in topical application for acne and related skin disorders.
Anti-inflamatory activity :
Furthermore,
- Oxyresveratrol significantly inhibited PGE2 production in a dose-dependent manner at non-cytotoxic concentrations (0.07–0.31 mg/ml).
This inhibition is crucial as
- PGE2 is a key inflammatory mediator that promotes redness, swelling, and pain associated with acne lesions.
By inhibiting PGE2 production, oxyresveratrol suppresses these inflammatory symptoms and downregulates a broader inflammatory cascade,
Anti bacterial and anti-inflammatory activities were observed below the cytotoxic levels, suggesting a favorable safety profile for oxyresveratrol in topical applications
How Oxyresveratrol Treats Acne
- Anti bacterial Action: Studies show it inhibits the growth of Cutibacterium acnes, the bacterium responsible for acne breakouts. Bactericidal effect is observed in 24 to 48 hours with extremely low concentrations.
- Reduces Inflammation: It significantly suppresses pro-inflammatory markers, such as COX-2 and prostaglandin E2,calming redness, swelling, and pain associated with acne lesions.
- Fades Post-Acne Marks: It is highly effective at treating post-inflammatory hyperpigmentation (PIH)—the dark red or brown spots left behind after a pimple heals..