Caffeine Carboxylic Acid
A caffeine derivative. It tones the scalp and supports freshness in hair products. Well tolerated.
Evidence by route
Topical application
A toning active ingredient. Safe.
- CIR Cosmetic Ingredient Review safety assessment
How to read tiers A–F
- BLimited evidence. One RCT or several controlled studies with limitations
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Combination, Oily, Sensitive
About this ingredient
Caffeine carboxylic acid (INCI: Caffeine Carboxylic Acid) is a caffeine derivative that is more soluble and stable in a formula. It is used mostly in hair and scalp products, where it gives a toning, fresh feel, and sometimes in facial cosmetics for the same sensory purpose. As an active it is supporting. Topical caffeine is credited with effects on the follicle and microcirculation, but the clinical base is limited and results, where they appear, are modest. It is better treated as a pleasant add-on than as a proven anti-hair-loss active. For topical use the systemic contribution is negligible. It can be used during pregnancy and breastfeeding. Tolerance is good, with low irritation and allergy potential, fine for sensitive scalp and skin. It is not noted as comedogenic or drying.
Frequently asked questions
Is Caffeine Carboxylic Acid safe during pregnancy?
Caffeine Carboxylic Acid is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Caffeine Carboxylic Acid for?
Caffeine Carboxylic Acid suits: normal, dry, combination, oily, sensitive.
What is Caffeine Carboxylic Acid and what does it do in cosmetics?
A caffeine derivative.
What's the INCI name for Caffeine Carboxylic Acid?
The INCI name is Caffeine Carboxylic Acid.
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