What concentration of Caffeine is effective?

Typical effective concentrations of Caffeine are 0.2–5% in leave-on products, 0.2% shown effective for hair growth in some studies, higher concentrations used in anti-cellulite formulas.

The Skin Formulary

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Researched by Helena DeMaria-Williams

Formula IngredientAntioxidant

Caffeine

Q: Can Caffeine cause skin irritation?

Caffeine has a low irritation risk. Caffeine is well tolerated by most skin types and is not a known irritant at cosmetic concentrations. It has a drying/dehydrating action as a vasoconstrictor, so those with very dry or compromised skin barrier should ensure adequate moisturisation. No EU CosIng Annex II or III restrictions apply.

Q: Is Caffeine safe to use during pregnancy?

Caffeine is rated "caution" for pregnancy use. Topical caffeine is absorbed transdermally and can enter systemic circulation. While concentrations in leave-on cosmetics are low, systemic caffeine intake during pregnancy is associated with risks at high doses. As a precaution, pregnant individuals should minimise use of high-concentration caffeine products (particularly those covering large body areas) and consult a healthcare provider. Low-concentration products used on small areas (e.g. eye cream) are generally considered low risk.

Q: Does Caffeine increase sun sensitivity?

Caffeine has a no sun sensitivity risk. Caffeine does not increase photosensitivity. In fact, research suggests it may provide modest photoprotective benefits by helping to neutralise UV-induced free radicals. No additional sun protection is required due to caffeine's presence in a formulation.

Q: What skin types is Caffeine suitable for?

Caffeine is suitable for all skin types, oily, acne-prone, puffy or fatigued eyes, hyperpigmentation, anti-ageing concerns.

INCI: Caffeine

Caffeine is a methylxanthine alkaloid with antioxidant and anti-inflammatory properties that penetrates skin well due to its small, water-soluble molecular structure. Topically, it acts as a vasoconstrictor and phosphodiesterase inhibitor, improving microcirculation, reducing puffiness, and helping protect skin against UV-induced free radical damage. It is widely used in eye creams, anti-cellulite formulas, and antioxidant serums.

What does this do in a formula?

antioxidant protection, reduces puffiness, anti-inflammatory, improves microcirculation, potential UV photoprotection, aids absorption of other ingredients, lipolytic effect in anti-cellulite formulas

Is Caffeine safe? Key considerations

Can Caffeine cause irritation?

Low Risk

Caffeine is well tolerated by most skin types and is not a known irritant at cosmetic concentrations. It has a drying/dehydrating action as a vasoconstrictor, so those with very dry or compromised skin barrier should ensure adequate moisturisation. No EU CosIng Annex II or III restrictions apply.

Does Caffeine increase sun sensitivity?

No Risk

Caffeine does not increase photosensitivity. In fact, research suggests it may provide modest photoprotective benefits by helping to neutralise UV-induced free radicals. No additional sun protection is required due to caffeine's presence in a formulation.

Is Caffeine safe during pregnancy?

Caution

Topical caffeine is absorbed transdermally and can enter systemic circulation. While concentrations in leave-on cosmetics are low, systemic caffeine intake during pregnancy is associated with risks at high doses. As a precaution, pregnant individuals should minimise use of high-concentration caffeine products (particularly those covering large body areas) and consult a healthcare provider. Low-concentration products used on small areas (e.g. eye cream) are generally considered low risk.

How does Caffeine work?

Individuals with MANUAL REVIEW: no well-documented contraindications for topical caffeine; those with caffeine sensitivity may wish to patch test should review the considerations above before use.

Which products contain Caffeine?

Shop products that contain Caffeine

Caffeine

What does this do in a formula?

Is Caffeine safe? Key considerations

Can Caffeine cause irritation?

Does Caffeine increase sun sensitivity?

Is Caffeine safe during pregnancy?

How does Caffeine work?

Which products contain Caffeine?

Caffeine Eye Cream

PRO Redness Prone Skin Cleansing Facial Wash

Caffeine Solution 5% + EGCG Eye Serum

Multi-Peptide Eye Serum

Multi-Peptide Lash and Brow Serum