Ingredient review
2-Methylfuran-3-Thiol
INCI: 2-METHYLFURAN-3-THIOL
A synthetic fragrance compound used in tiny amounts to add a savory or roasted note; generally considered safe at low concentrations but may cause sensitivity in some individuals.
In plain English
2-Methylfuran-3-Thiol is a man-made chemical that smells like roasted meat or coffee. It's added to some cosmetic products to give them a unique scent. Because it's very strong, only a tiny bit is used. For most people, it's not irritating, but if you have very sensitive skin or a fragrance allergy, you might want to avoid products with this ingredient.
Quick decision guide
Read the cautions before using
2-Methylfuran-3-Thiol 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 2-Methylfuran-3-Thiol.
- 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
2-Methylfuran-3-Thiol is a sulfur-containing organic compound (a thiol) that is used as a fragrance ingredient. It is typically synthesized in a lab and is not derived from natural sources in commercial cosmetics.
How it works
In a cosmetic product, 2-Methylfuran-3-Thiol contributes to the overall fragrance profile. It does not provide any skincare benefit like moisturizing or exfoliating; its sole purpose is to impart a specific scent note.
Pros
Unique scent profile
Adds a savory, roasted, or coffee-like note that can make a product's fragrance more interesting and complex.
Low irritation risk at low levels
When used in the tiny amounts typical for cosmetics, it rarely causes irritation for most skin types.
Cons and cautions
Potential allergen
As a fragrance ingredient, it can trigger allergic reactions in people with fragrance sensitivities, leading to redness, itching, or rash.
Synthetic origin
It is not a natural ingredient, which may be a drawback for consumers who prefer plant-based or naturally derived cosmetics.
Best for
- People who enjoy complex, savory fragrances in their products
- Those without known fragrance allergies
Use caution if
- Individuals with fragrance allergies or sensitive skin
- Those seeking fragrance-free or 'clean' formulations
Usage tips
Safety summary
2-Methylfuran-3-Thiol is considered safe for use in cosmetics at the low concentrations typically employed. However, like all fragrance ingredients, it has the potential to cause allergic contact dermatitis in susceptible individuals. Regulatory bodies such as the IFRA (International Fragrance Association) set usage limits to minimize risk.
Research notes
Research on 2-Methylfuran-3-Thiol is limited to its sensory properties and safety as a fragrance ingredient. It is not associated with significant toxicity at cosmetic use levels, but individual sensitivity can occur. No long-term studies on skin health are available.
Common label clues
- Typical concentration
- Trace amounts (typically less than 0.1%)
- Regulatory status
- Approved for use as a fragrance ingredient in cosmetics in the EU and US, subject to concentration limits and labeling requirements for allergens.
- Common uses
- Fragranced products, Perfumes, Body lotions, Cleansers
- Environmental note
- As a synthetic compound, its environmental impact depends on manufacturing practices and disposal; no specific eco-toxicity data is widely available for this ingredient.
Good to know
- This ingredient is primarily used in fragranced products and is not typically found in fragrance-free formulations.
- It belongs to a class of compounds called thiols, which are known for their strong odors even at low concentrations.
Common questions
What is 2-Methylfuran-3-Thiol in beauty products?
2-Methylfuran-3-Thiol is a man-made chemical that smells like roasted meat or coffee. It's added to some cosmetic products to give them a unique scent. Because it's very strong, only a tiny bit is used. For most people, it's not irritating, but if you have very sensitive skin or a fragrance allergy, you might want to avoid products with this ingredient.
What does 2-Methylfuran-3-Thiol do in a beauty product?
In a cosmetic product, 2-Methylfuran-3-Thiol contributes to the overall fragrance profile. It does not provide any skincare benefit like moisturizing or exfoliating; its sole purpose is to impart a specific scent note.
Is 2-Methylfuran-3-Thiol safe for most people?
2-Methylfuran-3-Thiol is considered safe for use in cosmetics at the low concentrations typically employed. However, like all fragrance ingredients, it has the potential to cause allergic contact dermatitis in susceptible individuals. Regulatory bodies such as the IFRA (International Fragrance Association) set usage limits to minimize risk.
Who should be careful with 2-Methylfuran-3-Thiol?
Individuals with fragrance allergies or sensitive skin Those seeking fragrance-free or 'clean' formulations
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.