Antioxidant ·
Caffeine
What is it?
A naturally occurring xanthine alkaloid found in coffee, tea and guarana, used topically in skincare for its antioxidant and penetration-modifying properties.
What does it do?
Topical active readily absorbed through skin -- pharmaceutical-science studies confirm real percutaneous absorption and show it can be used as a marker/enhancer compound in penetration research; commonly included in eye creams and anti-redness/anti-cellulite formulations, though these specific cosmetic-efficacy claims have less direct clinical-trial support than its absorption behaviour.
Real products containing this
Sources
This page provides general skincare information and is not medical advice, diagnosis or treatment. Ingredient interactions and evidence summaries reflect published, cited sources — not a personal assessment of your skin. For medical skin conditions, rashes, pregnancy/lactation questions or persistent concerns, please consult a licensed dermatologist or HPCSA-registered practitioner.