active
Adenosine
Well-established anti-ageing active with FDA-recognised anti-wrinkle status. Prominent in K-beauty serums and foundations as a collagen-stimulating co-active complementing peptides and PDRN.
Benefits
- Stimulates fibroblast proliferation and collagen synthesis
- Anti-inflammatory via modulation of neutrophil/macrophage activity
- Supports wound healing and barrier repair
- Compatible across all skin types including sensitive
- Hair follicle growth stimulation at scalp concentrations
Example uses
- Anti-ageing serums
- Eye creams
- Foundations with skincare claims
- PDRN combination serums
- Sun serums with repair claims
Mechanism of action
Binds G protein-coupled adenosine receptors (A1, A2A, A2B, A3) in keratinocytes and fibroblasts, modulating cAMP to upregulate type I procollagen gene expression, suppress MMP-1, and inhibit pro-inflammatory cytokine release.
Clinical evidence · Moderate
2018 randomised double-blind study confirmed anti-wrinkle efficacy. Hair growth non-inferior to minoxidil at 0.75% confirmed separately.
Effective concentration range
0.1–0.5%
Formulation notes
Stable pH 4–7; water-soluble. Decomposes under prolonged UV exposure.
Watchouts
Very low effective concentrations (0.1–0.5%) place it near the INCI list bottom. Commercial dose gap vs. studied concentrations not audited.
Controversies & overclaims
No significant safety controversy. Main overclaim: ATP-level cellular energisation from topical application not demonstrated.
Market positioning
Often positioned as cellular energy booster. Documented mechanism is receptor-mediated collagen stimulation — ATP framing is marketing extrapolation.
Comedogenicity
0 / 5
Sensitisation risk
Low
INCI & aliases
Adenosine
adenine riboside · 9-beta-d-ribofuranosyladenine
Clean beauty perception
Widely accepted — EWG rating 1. Accurately labelled naturally occurring (yeast fermentation). No safety controversy.
Related ingredients
Graph relationships
Timeline