Ingredient review
Fluorescent Brightener 367
INCI: Fluorescent Brightener 367
Fluorescent Brightener 367 is a synthetic optical brightener rarely used in leave-on skincare; it may create a temporary whitening effect but offers no skin benefit and is not a standard cosmetic ingredient.
In plain English
Fluorescent Brightener 367 is a man-made chemical that absorbs invisible ultraviolet light and re-emits it as a blue-white glow. This makes things look brighter or whiter to the human eye. You'll mostly find it in laundry detergents and paper, not in everyday skincare products. In cosmetics, it might be used in very small amounts in rinse-off items like shampoos or body washes to make them appear cleaner or brighter, but it doesn't improve your skin's health or appearance.
Review score
Safety, usefulness, and evidence
Higher-caution ingredient
The evidence base is still emerging, so marketing claims deserve extra caution.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- emerging
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Read the cautions before using
Fluorescent Brightener 367 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 Fluorescent Brightener 367.
- 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
emergingThe ingredient may be promising, but claims should be treated more cautiously.
What it is
A synthetic organic compound from the stilbene family, designed to absorb UV light (340–400 nm) and emit visible blue light (around 430 nm). It is not a pigment or dye but an optical brightener that creates a whitening effect through fluorescence.
How it works
When applied to a surface (like fabric or skin), the molecule absorbs UV radiation from sunlight or indoor lighting and re-emits it as blue light. This blue light counteracts any yellow or dull tones, making the surface appear whiter, brighter, and cleaner. In a cosmetic product, the effect is purely optical and temporary—it does not change the actual color or condition of the skin.
Pros
Temporary optical brightening
Can make skin or hair appear whiter or brighter immediately after use, which may be desirable in rinse-off products like shampoos or body washes.
Low typical concentration
Used at very low levels (under 0.1%), so the risk of irritation is generally low for most people in rinse-off applications.
Cons and cautions
No real skincare benefit
The brightening effect is purely optical and temporary—it does not improve skin tone, reduce pigmentation, or provide any lasting benefit.
Limited safety data for leave-on use
Most safety studies focus on textile and detergent use, not prolonged skin contact. There is little published research on its effects in leave-on cosmetics.
Best for
- People looking for a temporary brightening effect in a rinse-off product like a shampoo or body wash
- Those who want a quick optical fix without long-term skin benefits
Use caution if
- Anyone with sensitive skin or a history of allergic reactions to optical brighteners
- Those seeking genuine skin lightening or brightening through melanin inhibition or antioxidant activity
Usage tips
Safety summary
Fluorescent Brightener 367 is considered low risk in rinse-off applications at typical concentrations, but there is limited safety data for leave-on use. Skin irritation or allergic reactions are possible, especially for sensitive individuals. It offers no skincare benefit.
Research notes
Published research on Fluorescent Brightener 367 in cosmetics is scarce. Most studies focus on its use in textiles and detergents, where it is considered safe at low levels. No peer-reviewed studies confirm efficacy or safety for leave-on skincare.
Common label clues
- Typical concentration
- Very low (typically under 0.1%)
- Regulatory status
- Approved for use in textiles and detergents in many regions, but not specifically regulated as a cosmetic ingredient. In the EU, it may be listed as a colorant under the CosIng database. Always check local regulations.
- Common uses
- Laundry detergents, Textiles, Paper, Some rinse-off personal care products
- Environmental note
- Some optical brighteners are not readily biodegradable and may persist in wastewater. Their environmental impact is a concern for aquatic ecosystems.
Good to know
- Fluorescent Brightener 367 is not a standard skincare ingredient and is rarely listed in leave-on products.
- Optical brighteners are sometimes added to sunscreens or makeup to create a 'glow' effect, but they do not provide UV protection.
Common questions
What is Fluorescent Brightener 367 in beauty products?
Fluorescent Brightener 367 is a man-made chemical that absorbs invisible ultraviolet light and re-emits it as a blue-white glow. This makes things look brighter or whiter to the human eye. You'll mostly find it in laundry detergents and paper, not in everyday skincare products. In cosmetics, it might be used in very small amounts in rinse-off items like shampoos or body washes to make them appear cleaner or brighter, but it doesn't improve your skin's health or appearance.
What does Fluorescent Brightener 367 do in a beauty product?
When applied to a surface (like fabric or skin), the molecule absorbs UV radiation from sunlight or indoor lighting and re-emits it as blue light. This blue light counteracts any yellow or dull tones, making the surface appear whiter, brighter, and cleaner. In a cosmetic product, the effect is purely optical and temporary—it does not change the actual color or condition of the skin.
Is Fluorescent Brightener 367 safe for most people?
Fluorescent Brightener 367 is considered low risk in rinse-off applications at typical concentrations, but there is limited safety data for leave-on use. Skin irritation or allergic reactions are possible, especially for sensitive individuals. It offers no skincare benefit.
Who should be careful with Fluorescent Brightener 367?
Anyone with sensitive skin or a history of allergic reactions to optical brighteners Those seeking genuine skin lightening or brightening through melanin inhibition or antioxidant activity
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.