Ingredient review
Ferric Ammonium Citrate
INCI: Ferric Ammonium Citrate
A safe, non-irritating colorant that also offers mild astringent properties, but its cosmetic benefits beyond tinting are limited.
In plain English
Ferric ammonium citrate is a mineral-based ingredient that gives cosmetics a warm, yellowish-brown tint. It also has a mild tightening effect on the skin, which can temporarily make pores look smaller. Think of it as a gentle color adjuster with a slight skin-tightening bonus.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Ferric Ammonium Citrate is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Ferric Ammonium Citrate.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A complex salt of iron, ammonia, and citric acid, used primarily as a colorant in cosmetics. It appears as a green or brown powder and dissolves in water to produce a yellow-brown solution.
How it works
When applied to the skin, ferric ammonium citrate deposits a thin layer of iron particles that reflect light in a warm tone, creating a subtle tint. Its astringent action comes from the iron ions, which can temporarily tighten skin proteins, giving a brief firming sensation.
Pros
Gentle colorant
Provides a subtle, warm tint without the heavy coverage of some synthetic dyes, making it suitable for everyday wear.
Mild astringent
Can temporarily tighten skin, which may help reduce the appearance of pores for a short time after application.
Cons and cautions
Limited cosmetic benefit
Beyond tinting and mild astringency, it offers no moisturizing, anti-aging, or protective benefits for the skin.
Potential for yellowing
On very fair or cool-toned skin, the warm tint may appear slightly yellow or muddy if the concentration is too high.
Best for
- People looking for a natural-looking tint in foundation or concealer
- Those with oily skin who appreciate a mild tightening effect
Use caution if
- Individuals with known iron sensitivity or allergy
- Anyone seeking strong, long-lasting skin-tightening results
Usage tips
Safety summary
Ferric ammonium citrate is considered safe for cosmetic use at typical concentrations. It has low irritation and comedogenic potential, though individuals with iron allergies should avoid it.
Research notes
Research on ferric ammonium citrate in cosmetics is limited. Most safety data come from its use as a food additive and in pharmaceuticals, where it is well-tolerated. Cosmetic-specific studies are sparse but indicate low risk.
Common label clues
- Typical concentration
- Typically used at 0.1–1% in leave-on products
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions, with concentration limits typically under 1% in leave-on products.
- Common uses
- Foundations, Concealers, Tinted moisturizers, Color cosmetics
- Environmental note
- Synthetic production has a moderate environmental footprint; it is not biodegradable but is used in very small amounts.
Good to know
- Ferric ammonium citrate is also used in some sunscreens as a color stabilizer.
- It is generally considered safe by cosmetic safety panels at typical use levels.
Common questions
What is Ferric Ammonium Citrate in beauty products?
Ferric ammonium citrate is a mineral-based ingredient that gives cosmetics a warm, yellowish-brown tint. It also has a mild tightening effect on the skin, which can temporarily make pores look smaller. Think of it as a gentle color adjuster with a slight skin-tightening bonus.
What does Ferric Ammonium Citrate do in a beauty product?
When applied to the skin, ferric ammonium citrate deposits a thin layer of iron particles that reflect light in a warm tone, creating a subtle tint. Its astringent action comes from the iron ions, which can temporarily tighten skin proteins, giving a brief firming sensation.
Is Ferric Ammonium Citrate safe for most people?
Ferric ammonium citrate is considered safe for cosmetic use at typical concentrations. It has low irritation and comedogenic potential, though individuals with iron allergies should avoid it.
Who should be careful with Ferric Ammonium Citrate?
Individuals with known iron sensitivity or allergy Anyone seeking strong, long-lasting skin-tightening results
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.