CAFFEINE

📋 Quick facts

Description: CAFFEINE — antioxidant, de-puffing, vasoconstrictor (common in eye creams).

All Functions: antioxidant, de-puffing, vasoconstrictor (common in eye creams)

Quick Facts:

• Category: active

Proven Benefits At A Glance:

• Caffeine can penetrate the skin barrier and is commonly used in topical skincare at 3% concentration
• It has antioxidant properties and may protect skin from UV damage and aging
• Caffeine is used in anti-cellulite products because it may help prevent fat accumulation in cells
• Research shows caffeine can help reduce hair loss when combined with adenosine in shampoos
• At low doses, caffeine may help protect skin cells from oxidative stress and senescence (premature aging at the cellular level)

⚗️ Chemical Overview

Caffeine appears as odorless white powder or white glistening needles, usually melted together. Bitter taste. Solutions in water are neutral to litmus. Odorless. (NTP, 1992) Caffeine is a trimethylxanthine in which the three methyl groups are located at positions 1, 3, and 7. A purine alkaloid that occurs naturally in tea and coffee. It has a role as a geroprotector, a mutagen, a central nervous system stimulant, a psychotropic drug, a diuretic, a xenobiotic, an EC 3.1.4.* (phosphoric diester hydrolase) inhibitor, an EC 2.7.11.1 (non-specific serine/threonine protein kinase) inhibitor, an adenosine A2A receptor antagonist, an adjuvant, a food additive, a ryanodine receptor agonist, an adenosine receptor antagonist, a mouse metabolite, a plant metabolite, a fungal metabolite, an environmental contaminant and a human blood serum metabolite. It is a purine alkaloid and a trimethylxanthine. Caffeine is a drug of the methylxanthine class used for a variety of purposes, including certain respiratory conditions of the premature newborn, pain relief, and to combat drowsiness. Caffeine is similar in chemical structure to [Theophylline] and [Theobromine]. It can be sourced from coffee beans, but also occurs naturally in various teas and cacao beans, which are different than coffee beans. Caffeine is also used in a variety of cosmetic products and can be administered topically, orally, by inhalation, or by injection. The caffeine citrate injection, used for apnea of the premature newborn, was initially approved by the FDA in 1999. According to an article from 2017, more than 15 million babies are born prematurely worldwide. This correlates to about 1 in 10 births. Premature birth can lead to apnea and bronchopulmonary dysplasia, a condition that interferes with lung development and may eventually cause asthma or early onset emphysema in those born prematurely. Caffeine is beneficial in preventing and treating apnea and bronchopulmonary dysplasia in newborns, improving the quality of life of premature infants.

Source(s): CAMEO Chemicals, ChEBI, DrugBank, via PubChem

📊 Comedogenicity

🛡️ Safety rating

Safety tier is a starting heuristic from regulatory status and comedogenic rating, not a dermatological verdict — see our Terms for the full disclaimer. Research confidence reflects how many real cited studies back this ingredient, not the strength of their findings.

🤰 Pregnancy Safety Note

Topical caffeine has minimal systemic absorption. Safe in cosmetic products during pregnancy.

🌍 Regulatory Status

💧 Skin Type Compatibility

Derived from this ingredient’s irritancy potential and comedogenicity rating against the needs of each skin type — e.g. oily and acne-prone skin are marked down for pore-clogging ingredients, sensitive skin for irritants. A starting heuristic, not a dermatological verdict.

⚠️ Don’t Combine With

📚 Research & Evidence

🔬 The Science

Caffeine is a purine alkaloid — a type of naturally occurring compound — that has gained popularity in skincare and cosmetics due to its ability to cross the skin barrier and its multiple biological effects (Skin Pharmacol Physiol, 2013). #1: Antioxidant and photoprotection: Caffeine has potent antioxidant properties, meaning it can neutralize harmful molecules called free radicals. According to research, it helps protect skin cells against UV radiation damage and may slow photoaging — the visible aging caused by sun exposure (Skin Pharmacol Physiol, 2013). More detailed mechanistic research shows that at low doses (below 10 micromolar concentration), caffeine suppresses cellular senescence induced by oxidative stress and UV damage in both lab-grown skin cells and mouse skin tissue (Theranostics, 2018).

Specifically, caffeine appears to work by activating autophagy — essentially a cellular “cleanup” process — that eliminates reactive oxygen species (harmful molecules created by oxidative stress). #2: Anti-cellulite effects: Caffeine is frequently used in anti-cellulite cosmetic products because it may prevent excessive fat accumulation in fat cells. The proposed mechanism involves stimulating fat degradation (lipolysis) through inhibition of an enzyme called phosphodiesterase (Skin Pharmacol Physiol, 2013). #3: Circulation and hair health: Caffeine increases blood microcirculation in the skin, which may support overall skin health (Skin Pharmacol Physiol, 2013). Regarding hair, caffeine inhibits an enzyme called 5-α-reductase (Skin Pharmacol Physiol, 2013), and when combined with adenosine in shampoo formulations, the combination significantly enhanced hair density and reduced hair loss in a study of 77 participants aged 18-60 years (J Cosmet Dermatol, 2024).

However, researchers note that more evidence is needed to fully establish the efficacy of caffeine-adenosine combinations for hair loss treatment. It’s worth noting that while these sources demonstrate caffeine’s potential benefits in topical and oral forms, some mechanisms are still being understood, and the sources themselves indicate areas where further research is needed.

📄 Related Research

Matched by search — not necessarily verified support for every statement above.

• Herman A et al. (2013). Caffeine’s mechanisms of action and its cosmetic use. Skin Pharmacol Physiol.
• Li YF et al. (2018). Caffeine Protects Skin from Oxidative Stress-Induced Senescence through the Activation of Autophagy. Theranostics.
• Chen D et al. (2024). Anti-hair loss effect of a shampoo containing caffeine and adenosine. J Cosmet Dermatol.
• Luo L et al. (2015). Topical and transdermal delivery of caffeine. Int J Pharm.
• Mandal AK et al. (2024). Caffeine Inhibits Both Basal and Insulin-Activated Urate Transport. Arthritis Rheumatol.

🧴 Products Containing CAFFEINE

• Nivea Men NIVEA Men Active Energy Hydraterende Dagcrème
• Too Faced Hangover Wash The Day Away Gentle Foaming Cleanser
• shampoo
• Henkel,Syoss Power Shampoo for Men
• DM Balea Men Fresh Shampoo
• Buchter’s Son, Murnauer Markenvertrieb GmbH Butcher’s Son Hydro Cream
• Alterra Alterra 3in1 festes Bart-Shampoo
• Alverde alverde coffein shampoo
• Laab MEN Multi-Booster Ultralekki krem nawilżająco-kojący
• Eveline Cosmetics Cooling compress hydrogel eye pads
• Bioélixire Odżywka do włosów zniszczonych
• tola shampoo
• Arrurrú Crema avena
• h
• Clinique Fresh Pressed 7-Day System with Pure Vitamin C
• Istituto Elvetico Sanders Rigenexyl plus
• Head & Shoulders Men ultra anti-chute
• Les Cosmetiques Gel contorno de ojos aplicador frio booster plan
• MAC Studio Radiance 24HR Luminous Lift Concealer NC11
• urban care Urban Care Biotin & Caffeine
• Hoito Saç maskesi
• LBD, Melyssa Poudre Libre Matifiante
• Love Beauty and Planet Love Beauty And Planet Masque tissu Infusion Hydratante x1
• Love Beauty and Planet LBP Mask Rapid Reset Tea & Veti 1pc 40x
• L’OREAL NORGE AS L’Oreal Eyecream Age Perfect Gold Rosy 15ml
• Garnier Vitamin(e) C
• Yves Rocher Elixir 7.9 roll-on Regard
• ANAI RUI ANAI RUI Caffeine Bakuchiol Firming Eye Cream
• clinique deep comfort
• clinians Gel drenante contorno occhi
• Clinique Redness solutions
• head and shoulder’s shampoo
• Weis Markets Inc., Weis quality Citrus Flavored Soda, Citrus
• malibu tan
• Dove men care Shampoo + Conditioner
• Dove men care Shampoo and Conditioner
• Clinique Clinique Moisture Surge 100H Auto-Replenishing Hydrator 75 ml
• Clinique Clinique For Men Charcoal Face Wash
• clinique anit age mpisturizer
• L’Oréal, L’Oreal Luxe, Kiehl’s Kiehl’s Facial Fuel Eye De-Puffer