INGREDIENT

Caffeine

Topical caffeine has been studied in people with androgenetic alopecia, excessive shedding and hair thinning, and a 2025 systematic review found generally favorable results across nine clinical studies. The evidence is promising rather than definitive, and it does not prove that a different finished product such as Folivis SUPPORT will produce the same result.

Topic: Ingredients, Explained

What it is

Caffeine is a xanthine compound used in some topical scalp and hair products. It can penetrate skin and hair follicles, which is one reason it has attracted interest as a leave-on cosmetic ingredient.

Folivis lists caffeine in the current SUPPORT formula. That is a formula fact; it is not the same as saying the finished Folivis serum has been clinically proven to regrow hair.

Why it is used

Topical caffeine has been investigated in clinical hair-loss studies, including products used by people with androgenetic alopecia, excessive shedding or thinning.

For a leave-in scalp serum, caffeine is relevant because the ingredient remains in contact with the scalp rather than being immediately rinsed away. The practical value of any finished formula still depends on the complete product and how it is used.

What the evidence says

The strongest recent overview — A 2025 systematic review identified nine clinical studies involving 684 participants with androgenetic alopecia, excessive hair loss or thinning. The individual studies generally reported outcomes in favor of topical caffeine.

The evidence quality was mixed — Only three studies were rated medium quality; one was low and five were very low. Common problems included missing randomization, weak or absent control groups and incomplete information about caffeine concentration.

What this means for Folivis — The literature makes topical caffeine a credible ingredient to discuss, but it does not let Folivis borrow the results of unrelated caffeine products. A finished-product claim would need evidence on the actual SUPPORT formulation, users and outcome.

EVIDENCE CHAIN

Claims stay connected to their evidence.

EDITORIAL METHOD

Evaluate whether the study tested the exact product, population and outcome relevant to the claim.

Population / context: Readers evaluating product evidence

This is Folivis editorial methodology, not a finding or conclusion attributed to the cited authors.

LABORATORY STUDY

Cinnamic acid research in hair follicle organoids (PMID 38409197)

Folivis uses this source in relation to the following reviewed statement(s):

The cited cinnamic acid study investigated hair follicle organoids in a laboratory setting.

Evaluate whether the study tested the exact product, population and outcome relevant to the claim.

Laboratory findings do not establish Folivis finished-product performance, a consumer dose or a time to results.

This is Folivis editorial methodology, not a finding or conclusion attributed to the cited authors.

Scientific Reports, 2024 ↗

Study record

Cinnamic acid research in hair follicle organoids (PMID 38409197) — Scientific Reports, 2024

Population: Laboratory cell and organoid models, not consumers | Readers evaluating product evidence

Intervention / model: Cinnamic acid evaluated in laboratory hair-related models.

Laboratory findings do not establish Folivis finished-product performance, a consumer dose or a time to results.

This is Folivis editorial methodology, not a finding or conclusion attributed to the cited authors.

IMPORTANT LIMITS

The reviewed studies tested different caffeine products, concentrations and study designs. Their results cannot be transferred automatically to Folivis SUPPORT.

Most of the available clinical evidence was rated low or very low quality, so larger randomized controlled trials with clearly defined formulations are still needed.

Ingredient evidence can support scientific interest; it does not establish a guaranteed hair-growth result for an individual consumer.

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