Ingredient review
Hexamethylindan-5-ethanol
INCI: HEXAMETHYLINDAN-5-ETHANOL
A synthetic scent ingredient that adds a warm, woody note but offers no skincare benefit and may trigger sensitivity in some people.
In plain English
This is a man-made chemical that gives products a pleasant, warm, woody, amber-like smell. It is added purely for fragrance and does not moisturize, treat, or improve your skin. While generally considered safe at low levels, it can cause irritation or allergic reactions in people with sensitive skin or fragrance allergies.
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
Hexamethylindan-5-ethanol 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 Hexamethylindan-5-ethanol.
- 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 synthetic organic compound from the indan family, created in a lab to mimic the scent of natural ambergris or woody notes. It is a pure fragrance ingredient with no known skin-beneficial properties.
How it works
It sits on the skin's surface and evaporates slowly, releasing its scent molecules. It does not penetrate deeply or interact with skin cells in a meaningful way—its only role is to provide a pleasant odor.
Pros
Pleasant scent profile
Provides a warm, woody, amber-like aroma that many people find appealing and sophisticated.
Low irritation at low concentrations
When used at typical low levels (under 1%), it has a low risk of irritation for most people.
Cons and cautions
No skin benefit
This ingredient is purely for fragrance—it does not hydrate, soothe, or improve your skin in any way.
Potential allergen
Like many synthetic fragrances, it can cause allergic contact dermatitis, especially in those with a history of fragrance sensitivity.
Best for
- People who enjoy warm, woody fragrances in their skincare
- Those without fragrance sensitivities or allergies
Use caution if
- Anyone with known fragrance allergies or sensitive, reactive skin
Usage tips
Safety summary
Generally recognized as safe for use in cosmetics at low concentrations by major regulatory bodies. However, it is a known potential allergen and can cause skin reactions in sensitive individuals. The Cosmetic Ingredient Review (CIR) has not issued a specific safety assessment for this exact compound, but similar synthetic fragrance ingredients are considered safe when used as intended.
Research notes
Limited peer-reviewed research specifically on hexamethylindan-5-ethanol. Most safety data comes from fragrance industry assessments and general studies on synthetic fragrance allergens. The EU Scientific Committee on Consumer Safety (SCCS) has evaluated related indan derivatives and found them safe at low levels, but individual sensitivity varies.
Common label clues
- Typical concentration
- Typically used at very low concentrations (under 1%) in leave-on and rinse-off products
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other countries. Subject to fragrance allergen labeling requirements in the EU if present above certain thresholds.
- Common uses
- Fragranced skincare, Perfumes, Body lotions, Hair products
- Environmental note
- As a synthetic compound, its production has a lower environmental impact than harvesting natural ambergris, but it is not biodegradable and may accumulate in the environment.
Good to know
- Hexamethylindan-5-ethanol is often listed simply as 'fragrance' or 'parfum' on labels, so you may not see it by name.
- It is not the same as natural ambergris (whale-derived) and is considered a cruelty-free alternative.
Common questions
What is Hexamethylindan-5-ethanol in beauty products?
This is a man-made chemical that gives products a pleasant, warm, woody, amber-like smell. It is added purely for fragrance and does not moisturize, treat, or improve your skin. While generally considered safe at low levels, it can cause irritation or allergic reactions in people with sensitive skin or fragrance allergies.
What does Hexamethylindan-5-ethanol do in a beauty product?
It sits on the skin's surface and evaporates slowly, releasing its scent molecules. It does not penetrate deeply or interact with skin cells in a meaningful way—its only role is to provide a pleasant odor.
Is Hexamethylindan-5-ethanol safe for most people?
Generally recognized as safe for use in cosmetics at low concentrations by major regulatory bodies. However, it is a known potential allergen and can cause skin reactions in sensitive individuals. The Cosmetic Ingredient Review (CIR) has not issued a specific safety assessment for this exact compound, but similar synthetic fragrance ingredients are considered safe when used as intended.
Who should be careful with Hexamethylindan-5-ethanol?
Anyone with known fragrance allergies or sensitive, reactive skin
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.